We designed our Jeep TJ, or LJ GM 14 bolt swap kit to make it easy for you to put a one ton GM 14 Bolt in the back of your 1997-2006 Jeep Wrangler TJ, or LJ with triangulated rear upper links. This kit is designed to work with a GM 14 bolt (AAM 10.5) 1 ton rear axle out of a 1999-2006 GM single rear wheel 2500 or 3500 pickup . All parts of this kit are keyed to the truss, making installation a breeze. Simply center the truss and set the angle, and all other components will locate off from the truss. The upper link mounts feature a 9/16 inch bolt hole and a 2 inch mounting width. Use this axle truss system if you want to remove your rear track bar and convert your rear suspension to a triangulated 4 link, in place of the factory parallel 4 link with track bar. This kit requires welding, custom rear upper links, and upper link frame mounts.