2013 Ford Mustang Shelby GT500 Spy Shots + Custom Muffler
June 24th, 2010
Early this spring, word emerged on the Web that the 2013 Shelby GT500 could kick out as much as 620 horsepower. Today, we see some spy shots that hint at a turbocharger replacing the supercharger under the hood. A larger, higher-capacity intercooler spotted peeking out from behind the grille is the cue for the turbo…read more »

