Although the S650-generation Mustang EcoBoost leaves much to be desired in terms of aural pleasure, Borla is much obliged to improve things by means of a cat-back exhaust. Prices kick off at $ ...

Other performance enhancements include a suspension upgrade, Baer brakes and Borla dual exhaust. Interior and exterior mods include: A new Shelby Mustang will go on sale in 2006 - and it's a V6!