For vehicles already equipped with aftermarket coilovers and sway bars this is a perfect kit. for those that have already installed springs & shocks, coilovers and sway bars. Front camber and castor adjustment are added along with rear camber adjustment. Bumpsteer is corrected. Sub-frame control surfaces are increased by 640%. Every worn, torn or corroded bush and ferule are upgrade to Petty?s bushes.