2010 Roush 540RH Mustang Engine

For 2010 Roush has come out with its ultimate version of the Ford Mustang. Coincidentally it features the exact same horsepower as the Shelby GT500–the top of the line production version–so how do they compare?

StreetFire | October 23, 2009

Tags:. .features. .coincidentally. .horsepower. .shelby. .version