Fitment Information Ford Mustang V8 (1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995) Specs & Features Bolt Pattern: 5/114.3 Center Bore: 70.5 Bolt or Stud: Stud Thread Type: 1/2" UNF Sold as a pair Available in multiple styles DRS Series DRS Series spacers fit between the wheel and hub, and require exchanging the existing wheel studs for longer ones (studs included.) DRM Series DRM Series spacers bolt to the hub with existing wheel studs and special nuts (studs and nuts included.) Wheel is bolted to new DRM wheel studs. Product Description Wider is Better! H&R TRAK+ Wheel Spacers move your wheels and tires outwards so they are more flush with the fender- instantly giving your vehicle the perfect stance. High end sports car manufacturers use every millimeter of fender space available in their design for the best looks and highest performance and so should you. With TRAK+ you can fill the gap in your fenders and GO WIDE!TRAK+ Wheel Spacers are manufactured from a special proprietary alloy specifically developed for H&R that is lighter and has a higher tensile strength than 6061-T6 billet aluminum. H&R TRAK+ Wheel Spacers are hubcentric and feature a full contact hub- just like the factory hub- for even load force distribution and lateral support. Additional Note 1 DRS 5mm Wheel Spacers-These are hub-centric flat disc type spacers which require the factory hub to center the wheels. Please measure the vehicle hub to verify sufficient height will remain to center the wheel after spacer installation. Additional Note 2 DRM 20mm Wheel Spacers- If the depth of the wheel spacer is smaller than the length of the standard studs, the wheels used must allow for small cavities in the mounting pad of the wheel. If using wheels without cavities, the standard studs should be shortened so that they do not extend beyond the height of the spacer. Additional Note 3 DRS 20mm Wheel SpacersCareful attention must be paid to the vehicle hub height and inner wheel bevel measurements. Failure to follow the measurement guidelines below can result in serious damage to wheel spacers, wheels, and mounting hardware.