600+ HP For 2011 Ford Shelby Mustang GT350

Shelby American has released the official performance specs for the supercharged and normally aspirated Shelby GT350. 624 horsepower was achieved with the optional “R” tune, which Shelby American says, makies the 2011 Shelby Mustang GT350 one of the most powerful limited production cars in the world.   http://www.mustangevolution.com/201010072866/