This Interloc aluminum body mount bushing kit lowers the body to the frame by ½ an inch. This kit is only used with a subframe that uses a 3/16 plate that is on top of the factory frame rail, such as Global West subframes. The bushings index and sandwich the frame via two piece design. Hardware and the radiator core support are also included. Installation is simple and only requires a couple hours. FYI- GM in 1982 removed body mount bushings between the cross member and body and bolted the cross-member direct.