If you thought $54,995 was going to be too much to pay for the 2013 Ford Mustang Shelby GT500, the SAE ratings are here to change your mind. How does 662 horsepower and 631 lb-ft of torque sound? Shelling out 55 grand would give you the most powerful production V8 in the world. The Shelby's direct competitor, the Chevy Camaro ZL1, will only give you 580 horse. Boom, roasted. 

[via Car and Driver]