A simple and practical way to reduce the height of the rear of a C10 or C20 truck without affecting the driving quality. These lowering kits are specially made for Chevy 1960-1972 and for GMC C10/C20 2WD trucks equipped with factory rear coil springs. Pickup truck rear lowering blocks allow you to customize your ride, provide a lowered stance and boost handling performance Located between the axle housing and the rear lower trailing arm, it provides you with a 3" lowering volume.