This weld-on bracket is part of our TJ Axle Swap Kit that adapts the popular Ford 8.8" rear end to the stock suspension mounts in your Jeep Wrangler TJ! This is designed to fit the 3.25" tube diameter of the 8.8 but can be used for any tube diameter from 3"-3.5" with some fine tuning. This bracket mounts to your existing 2" wide upper control arm and 1 5/8" wide track bar. This should be welded on by a competent welder with the correct equipment. We also offer the weld on coil spring buckets and shock mounts separately on our website!