Services · Rosendale, WI
Everything From an Oil Change to a Twin-Turbo Stroker Build
One shop, one set of hands, start to finish: performance packages, custom engine builds, in-house dyno tuning, EFI conversions, wheel and tire packages, and honest everyday repair. Late-model GM is our backbone — with Mopar and Ford performance expanding fast.
Performance Packages
Stages 1 Through 5 — Pick Your Rung on the Ladder
Every WSP build fits somewhere on a five-stage ladder that runs from a daily-driver tune to a full race build. Each stage is scoped to your specific vehicle, your goals, and your budget — and every stage gets verified on our in-house dyno before you get the keys.
Stage 1 — The Daily-Driver Tune
The entry point of the ladder: wake your vehicle up without giving up drivability, reliability, or your commute. This is where most late-model GM trucks and cars start — and where a lot of owners realize how much the factory left on the table.
Built around
- Dyno tuning on our in-house rollers
- Keeps factory manners — starts, idles, drives like stock
- The foundation every later stage builds on
Stage 2 — Bolt-Ons, Done Right
Aftermarket parts sold, installed, and calibrated under one roof. We match intake, exhaust, and supporting hardware to your vehicle, then re-tune on the dyno so the parts actually work together instead of fighting each other.
Built around
- Aftermarket parts sales + install, no vendor finger-pointing
- Dyno re-tune after every hardware change
- Still a comfortable street car
Stage 3 — Serious Street Power
The middle of the ladder is where fueling, drivetrain, and supporting systems start getting upgraded alongside the power adders — the difference between a car that makes a big number once and one that makes it all summer.
Built around
- Fuel system and supporting-mod upgrades
- Transmission & differential work handled in-house
- Every combination proven on the dyno
Stage 4 — Boosted & Built
Turbochargers, superchargers, and built engines. This is the territory of our twin-turbo Silverados and LSA conversions — real forced-induction builds engineered as a complete package, not a pile of parts.
Built around
- Twin-turbo & supercharger installs
- Custom engine builds — see Engine Builds
- Customer cars at this level have laid down 1,000+ HP here
Stage 5 — The Full Race Build
The top of the ladder: purpose-built drag and drag-and-drive machines. This is where our Sick Summer finisher builds and 9-second passes come from — cars built to be beaten on at the strip and driven home after.
Built around
- Drag & drag-and-drive build prep
- Track support from our growing fleet program
- Proven results: Sick Summer finishers, 9-second passes
No two builds are identical, so we don't publish one-size-fits-all stage pricing. Tell us the vehicle and the goal — we'll spec your stage and quote parts, labor, and timeline straight. Start here or call (920) 579-0605.
Performance Engine Builds
Custom Engines, Built in This Building
Stroker builds, LS swaps, and forced induction from the ground up. We've built combinations like a 418 stroker breathing through twin Borg Warner 69s, and converted an LSA from nitrous to twin turbos. Classic muscle — Chevelles, GTOs, Impalas, Corvettes — modern trucks, drag cars: if it needs to make power, this is where it happens.
- Custom stroker builds — displacement and internals matched to your power goal
- LS swaps into classics and project vehicles
- Twin-turbo & supercharger installs, engineered as a complete system
- Power-adder conversions — like nitrous-to-twin-turbo on an LSA
- Every build verified on our in-house dyno before delivery
Dyno Tuning
The Dyno Is in the Building — Not Across the State
In-house dyno tuning means real numbers, not guesses, and no trailering your car to a third-party shop to find out what the tune actually does. Customer cars have put down 1,000+ HP on our rollers, and every tune leaves with a graph in hand.
- In-house dyno — tune, verify, and adjust in one visit
- 1,000+ HP customer pulls recorded on these rollers
- Tunes for daily drivers through full race builds
- Public Dyno Days — bring your car and put your number on the board
Better Than Factory — OEM+ Upgrades
EFI Conversions & OEM+ Upgrades for Classics
Your classic shouldn't need a ritual to start on a cold morning. We install Holley Sniper and full Holley EFI systems with proper fueling calibration — so your Chevelle, GTO, Impala, or Corvette starts, idles, and pulls like a modern car without losing its soul.
- Holley Sniper & full Holley EFI installs
- Fueling calibration done right — fuel system work handled in-house
- OEM+ upgrades for classic and modern muscle alike
- Dialed on the dyno, not by ear in the parking lot
Wheel, Brake & Suspension Packages
Complete Wheel, Brake & Performance Suspension Packages
Lower your lap times, slash your 60-foot times, and harness high horsepower with a rolling setup specced as one complete package — wheels, tires, brakes, and suspension chosen together for how your car actually gets driven: daily miles, weekend cruises, or launches at the strip.
01
Custom Wheel & Tire Packages
Aftermarket wheels sold, mounted, and fitted in this building — sized to clear your brakes, fill your fenders, and put the power down.
- Aftermarket wheel & tire packages, sold and mounted here
- Beadlocks for drag applications
- Performance tire fitment — drag radials, slicks, and street rubber
- Sizing and offset matched to stance and clearance, not guessed
02
Brake Upgrades
More power means more speed to shed. We upgrade stopping hardware to match what the engine bay is making — on the same car, in the same shop.
- Pads, rotors, lines & fluid upgraded as a system
- Brake packages matched to added power — street through strip
- Fitment checked against your wheel package, not after the fact
- Routine brake service handled too — see Brake Service
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Performance Suspension
Shocks, struts, and suspension setups built around the job: hooking a high-horsepower launch, carving a back road, or just riding right with a lowered stance.
- Shocks & struts for street, towing, or performance handling
- Drag suspension setups tuned for 60-foot launches
- Street & strip packages that stay livable on Wisconsin roads
- Set up by the shop prepping 9-second drag builds
One Package, One Shop, One Point of Accountability
Wheels, tires, brakes, and suspension all affect each other — offset changes brake clearance, tire compound changes launch behavior, ride height changes geometry. Buying them piecemeal from three vendors is how combinations end up fighting themselves. We spec the whole rolling package around your vehicle and your goal, then install and verify it under this roof.
Chasing power too? Wheel, brake, and suspension packages pair directly with our Stage 1–5 performance packages — so the chassis can handle what the engine makes.
Track Support & Drag Prep
Built to Be Beaten On at the Strip
Drag and drag-and-drive builds are proven where it counts. Cars prepped in this shop have finished Sick Summer and run 9-second quarter-mile passes — and our track support fleet keeps growing.
- Drag & drag-and-drive build prep — like our drag-and-drive S10s
- Sick Summer finisher builds came out of this shop
- 9-second passes from WSP-prepped drag builds
- Track support fleet partnerships, growing every season
Performance Pre-Purchase Inspection
Before You Buy Someone Else's Project
A modified car can hide a lot under a nice paint job. Before you hand over money for someone else's build, let the shop that does this work every day put eyes on it — and tell you exactly what you're actually buying.
- Inspection by techs who build and tune these cars daily
- Honest read on the quality of previous modification work
- Straight talk on what it'll cost to make it right
Aftermarket Parts Sales
Parts Sold & Installed Under One Roof
We sell the aftermarket performance parts we install — so there's no gap between the person who sold you the part, the person who bolted it on, and the person who tuned around it. One shop, one point of accountability.
- Performance parts sales alongside install service
- Parts matched to your build plan, not pushed off a shelf
- Install, calibration, and dyno verification in the same building
Maintenance & Repair
The Same Hands That Build 1,000 HP Do Your Oil Change
You don't need a race car to get race-shop attention to detail. We service classics, modern performance vehicles, daily drivers, and exotics — tap any service for the details.
Oil and filter service for everything from daily-driver trucks to exotics — with the same care we give an engine we just built. While it's on the lift, we put eyes on the underside and flag anything worth knowing about.
Tire sales, mounting, and fitment — from everyday all-seasons to performance rubber and beadlocks. Need wheels to go with them? See our wheel, brake & suspension packages.
Belt replacements and the everyday repairs that keep a vehicle dependable. Squeaks, rattles, warning lights, "it just doesn't feel right" — bring it in and we'll find it, explain it, and fix it.
From a stock rebuild that just needs to run right to full performance builds, engine work is what this shop is known for. If your engine is tired, smoking, or making noise, we diagnose honestly — repair, rebuild, or upgrade, your call. Chasing power instead? See Performance Engine Builds.
Transmission service and replacement handled in-house — the same drivetrain work we do behind 1,000+ HP builds, applied to your daily driver. Fluid service, repair, and replacement, done right the first time.
Worn shocks and struts wreck ride quality, tire wear, and braking distance. We replace them with parts matched to how you actually use the vehicle — stock comfort, towing duty, or performance handling. Building for the strip? See our performance suspension packages.
Pads, rotors, lines, and fluid — serviced by a shop that builds cars designed to stop from 150 mph. Whether it's a routine pad swap or a brake upgrade to match new power, stopping gets the same attention as going.
Exhaust and muffler repair and replacement — from fixing a leak to giving your car the sound it deserves. Performance exhaust work ties straight into our tuning, so it sounds right and runs right.
Electronics and electrical diagnosis on classics, modern vehicles, and exotics. A shop that wires full EFI conversions from scratch can find the gremlin in your charging system, lighting, or wiring harness.
Fluid changes across the board: engine, transmission, differential, brake, and coolant. We also handle differential replacement and full fuel system work — pumps, lines, and everything between the tank and the rail.
We're not the cheapest shop in Fond du Lac County — we're the one that does it right the first time and tells you the truth about what your vehicle needs.
Not sure which service you need? Call (920) 579-0605 and describe the symptom — we'll point you the right way, no upsell script.
Towing
Can't Drive It In? We'll Get It Here.
Dead in the driveway, stuck at the track, or a project that hasn't run in years — call the shop and we'll arrange getting your vehicle to 177 N Grant St so the work can start.
Get Started
Tell Us What You're Driving
Stage package, engine build, dyno session, tires, or a rattle you can't find — send the details and we'll call you back with a straight answer on parts, labor, and timeline.
Call the Shop
(920) 579-0605Visit
177 N Grant St
Rosendale, WI 54974
What Happens Next
We'll call you within one business day to talk through your vehicle, your goals, and an honest estimate. No pressure, no upsell script.
Proof We Stand On
1,000+ HP customer pulls on our in-house dyno · Sick Summer finisher builds · 9-second drag passes prepped in this shop.