Prices shown are the prices you can expect to pay for a 2019 Roush Performance Stage 3 Mustang 2 Door Fastback GT across different levels of condition. Edit options.

A Roush-tuned Ford Mustang is a modern muscle car gone manic. Our own Drew Phillips recently got to spend time with the 540-horsepower 2012 Roush RS3, which straddles the performance line between ...