Flowmaster American Thunder Cat-back Exhaust SystemFits 2005-2010 Ford Mustang GT, GT500, California Special or convertible with 4.6L or 5.4L engine. 3.00-inch mandrel bent pipes with Scavenger Series X-pipe. - Aggressive sound
Flowmaster Flow FX Axle-Back Exhaust System2005-2010 Ford Mustang GT, Shelby GT, GT500, California Special and Bullitt cars with 4.6L and 5.4L engines. - Aggressive to moderate sound