Horsepower Rx
Horsepower Rx

Built for Power. Tuned for Precision.

Performance muscle car in shop
Auto Specialty Shop · Est. Performance

Performance Built.
Precision Tuned.

Horsepower Rx is a full-service specialty shop building high-performance, classic restoration upgrades, custom wiring, powder coating, suspension work, race prep, and factory-level maintenance — for serious GM, Ford, and Mopar owners.

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20+
Years Experience
500+
Builds Completed
3
Brand Specialists
About Horsepower Rx

Where Raw Power
Meets Precision Engineering.

From boosted late-models to numbers-matching restorations, our team lives and breathes performance. We specialize in forced induction, custom one-off fabrication, suspension dialing, and the kind of factory-level maintenance that keeps your build alive on the street or at the strip.

Every project leaves the shop dyno-tuned, leak-checked, and documented — because we treat your build like it's parked in our own garage.

GM / Ford / Mopar
Race-Ready Builds
Custom Fabrication
Mechanic working on performance V8 engine
What We Do

Specialty Services

Eight focused disciplines under one roof — engineered to make your car faster, sharper, and more reliable.

Forced Induction

Forced Induction

Turbo and supercharger builds, intercoolers, fueling, and tuning for boost-ready power.

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Vintage Air Installation

Vintage Air Installation

Modern A/C performance hidden behind period-correct dash and vents.

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Custom Wiring

Custom Wiring

Full chassis harnesses, EFI conversions, and motorsport-grade electrical work.

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Powder Coating

Powder Coating

Durable factory-grade finishes on brackets, valve covers, suspension, and frames.

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Cerakoting

Cerakoting

Heat-resistant, tough cerakote finishes for headers, exhausts, and piston coatings.

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Suspension Upgrades

Suspension Upgrades

Coilovers, geometry correction, alignment and corner balancing.

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Race Prep

Race Prep

Cages, harnesses, fuel cells, weight reduction, and trackside support.

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Factory-Level Maintenance

Factory-Level Maintenance

Diagnostics and OEM-spec service for GM, Ford and Mopar — daily or showcar.

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Our Process

From Concept to Checkered Flag.

STEP 01

Inspect & Consult

Walk-around, goal scoping, and honest feasibility.

STEP 02

Plan the Build

Spec sheet, parts sourcing, timeline & budget.

STEP 03

Fabricate & Upgrade

Install, fab, coat, and assemble in-house.

STEP 04

Tune & Test

Dyno tuning, road testing, leak & alignment checks.

STEP 05

Deliver Performance

Documented handoff with break-in instructions.

Client Reviews

What Our Drivers Say

“Michael is an absolute unit. Always handles with class and attention to detail.”

Nick Weir
Nick Weir
W3ird Performance

“The work, attention to detail, knowledge, communication, and care Mike gives to his customers and their vehicles are beyond exemplary. I have seen all makes and type vehicles from 4x4 pickups to high performance cars in his care. He has done fluid changes, exhaust, suspension, brake, fueling, and turbo upgrades, custom powder coating, and beyond to my V-Sport. If you own an LF3/LF4 platform vehicle and you do not have Mike, the “Caddy Daddy” working it, you are doing a disservice to yourself and your vehicle. I am over two hours from his shop, but even if it were two days away, I would not trust anyone other than Mike. I recommend him to anyone. “Above and beyond” does not describe well enough his craft and care.”

David S.
David S.
2019 Cadillac CTS V-sport

“I have worked with Mike and Horsepower Rx for years now. He does phenomenal work and produces quality work, time and time again. Looking forward to the next Mopar I get to tune from him!”

Andrew Wizard of Tuning
Andrew Wizard of Tuning
Hemi Tuner

“Mike has provided me with both parts as well as his powdercoating services. Despite being almost an hour & a half away his communication & impeccable customer service makes him well worth the commute from Jacksonville and very much worth doing business with.”

David O.
David O.
Explorer ST
Frequently Asked

Got Questions?

We focus on GM, Ford, and Mopar — from classic muscle to modern performance platforms. We support both carbureted and EFI vehicles.

Use the contact form below or call the shop directly. We schedule an in-person walk-around to scope the project before quoting.

Maintenance and bolt-ons can be days. Forced induction installs run 2–4 weeks. Full builds and restorations are typically 3–9 months depending on scope.

Yes. Chassis swaps, engine swaps, full wiring harnesses, custom suspension and one-off fabrication are core services.

Absolutely — we service GM, Ford and Mopar vehicles to factory specifications including diagnostics, fluids, brakes, and tune-ups.

All performance builds include in-house dyno tuning, road testing, and a documented handoff with break-in instructions.

Ready to Build More Power?

Let Horsepower Rx turn your vehicle into a precision-built performance machine.

Start Your Project
Contact

Pull Into The Shop.

Phone
386-276-1140
Email
HorsepowerRx@outlook.com
Address
1768 State Avenue Holly Hill, Florida 32117
Hours
Mon – Sat · 8:00 AM – 6:00 PM