This five lug disc brake conversion kit changes over your V8 Mustang's front brakes to disc! Your original V8 spindles are used for easy installation. Disc brakes are an important safety modification to improve the driveability of your Mustang. This kit features single-piston calipers. A master cylinder and proportioning valve are not included. Depending on the year and application, a proportioning valve may be required. While not required, a dual bowl master cylinder is recommended for safety purposes. The industry standard part number for replacement Brake Pads for this kit is D159.