Signature build
The Mustang Sleeper
810 horsepower. Stock looks. A new Mustang GT with a Roush Phase 2 supercharger, built and tuned at TCcustoms.
The numbers
Roush's Phase 2 supercharger on the current Mustang GT makes 810 horsepower and 630 lb-ft on 93 octane, running roughly 13 psi of peak boost. And it is 50-state emissions legal under CARB EO D-488-66 for 2024 and 2025 models.
Roush's own testing has run the setup to a 10.33 quarter mile at 136 mph and 0 to 60 in 2.88 seconds. Those numbers came on a prepped track with slicks, the 10R80 automatic, and 3.55 gears, so treat them as the ceiling, not the promise. Results vary with fuel, weather, gearing, and tires.
Why a Sleeper?
Because the best part of 810 horsepower is nobody expecting it. We keep the car looking showroom stock: no wing, no stripes, no giveaway. The tune runs through Roush's own diagnostic tools, so service and support stay clean.
We have been building Sleeper Mustangs since 2016. It is the build that started the whole program.
Questions
Emissions, warranty, shipping
Is the Mustang Sleeper emissions legal?
Yes. The Roush Phase 2 supercharger carries CARB EO D-488-66 for 2024 and 2025 Mustangs, which makes it 50-state emissions legal.
What about the factory warranty?
Roush supercharger packages carry their own limited powertrain warranty, and your Ford coverage stays intact outside the powertrain. Call (205) 491-0009 and we will lay out exactly what is covered before you commit.
Can you ship the finished car?
Yes. We ship finished builds nationwide, and financing and trade-ins run through Town & Country Ford.
Ready?
Price yours out
Build and price it online, or call (205) 491-0009 and we will spec it together.