This product is a 2 inch drop spindle kit which retrofits your O.E. single-piston disc brake car. Can also be used with aftermarket brake kits that bolt to the stock disc brake spindle. All hardware included. Can reuse stock upper and lower ball joints. Direct bolt-on using factory or aftermarket replacement A-arms. No longer forced to use small G-Body brakes typically found in drop spindle kits. Stock steering arms bolt to the same location as on the stock spindle, keeping the steering geometry unchanged. Works with virtually any aftermarket steering arms, including rack and pinion kits.