Steeda\’s 1979-2004 Ford Mustang driveshaft spacer eliminates the need to have custom shafts made for length deficiencies of 3/8\” to 11/16\” and greatly reduces the chance of slip yoke failure by maintaining proper engagement. This part was developed by Steeda Hardcore for the Renegade Mustang to fit a C4 transmission, but will also work in other applications where 3/8\” to 11/16\” extra length is required. The spacer is made from billet aluminum for lower rotational mass and includes grade 12.9 hardware. Features Made from billet aluminum for lower rotational mass. Greatly reduces the chance of slip yoke failure. Benefits Eliminates the need for custom shafts. Less chance of slip yoke. Lighter and more durable. Applications 1979-2004 Ford Mustang 1979-2004 Ford Mustang GT 1984-1986 Ford Mustang SVO 1993-2004 Ford Mustang Cobra What\’s in the box? Steeda Mustang Driveshaft Spacer Grade 12.9 hardware. Time to Install About 1 1/2 Hours