Back in 2024, U.S.-based tuner Roush has managed to squeeze 821 PS (810 hp / 604 kW) out of the regular Ford Mustang GT. The company has now updated the package, listing it at a low $10,339 standalone or from $58,894 if already installed on an applicable car.
The centerpiece of the tuning is an Eaton TVS R2650 supercharger maintaining a steady 13 psi of boost pressure. It is accompanied by a pair of high-flow injectors, two intercoolers with a Bosch pump for faster active cooling, and a heat exchanger installed at the front end. These and other improvements enable the Mustang to hit 895 Newton-meters (630 pound-feet) of torque while not overheating within seconds.
For comparison, Ford’s own Dark Horse SC spec outputs an impressive 806 PS (795 hp / 593 kW) to the wheels but costs almost twice as much at $108,485. Roush emphasizes that the package is fully street-legal in all U.S. states and comes with a 36-month limited warranty.