We now offer the Coast driveline GT500 driveshafts. These 1 piece aluminum driveshafts will hold up to 700 flywheel horsepower. Dyno test on a standard mustang GT showed an increase of 14 RWHP because of the lighter design on these driveshafts. Im sure the GT500 guys will see 15-20 RWHP increase.

2007-2013 Mustang GT500 Coast Performance 1-Piece Aluminum Driveshaft