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Diagnosis first. Package matched to your goals. In-house install, tuning, and validation for Hellcat and TRX builds that need to work when they leave the shop.
Limited build slots open each month for full install and tuning work.
Every part CNC-machined to our spec, validated on the platforms we build every day — Hellcat, TRX, Trackhawk. No imports. No rebrands. No compromise.
Parts designed for your platform. Full install + tune in our shop. Pick the level that matches how hard you drive.
The Daily-Driven Street Machine
The Sweet Spot — Reliable 4-Digit Power
The No-Compromise Race Build
The Capable TRX Street Build
The Full-Send TRX Build
The F-150 That Leaves Everything Behind
Actual results from builds completed in our shop — documented before and after on our chassis dyno.
E85, race-ported SC, full install. Daily-driven.
Pulley, plugs, custom tune. No internal work.
Full short-block, triple-pump, 3.0 upper. Track-only.
"FAS put my Hellcat at 1,047 HP on their dyno. No drama, no excuses — just results. I've been to three shops over ten years and nobody does it like this. They diagnosed the car, told me exactly what it needed, and delivered exactly what they promised."
— Customer Build · FAS1000 Hellcat · Charlotte County, FL
We fabricate the parts that make a build work when shelf parts stop short. No outsourcing. No middlemen. Three generations of hands-on work.
