Prices shown are the prices you can expect to pay for a 2017 Roush Performance Stage 2 Mustang 2 Door Fastback GT across different levels of condition. Edit options.

Roush offers a solution if you want to add more oomph to the engine and it comes in the form of a supercharger kit with several hardware and software modifications. The tuning firm’s Stage 3 ...

As a side note, Roush will be adding regular Phase 1 and Phase 2-tuned supercharger kits to the lineup, which are scheduled to go on sale later this year. All kits are compatible with the 2024 ...