Our 1973-87 Chevy and GMC truck tubular upper and lower control armdesign helps to correct the camber and ball joint angle problems often found when using a drop spindle or lowered coil spring. We then designed an extra 2.0 degrees of caster into the arm to make the vehicle drive straight and true. These arms come with factory early model cross shafts for ease of installation and increased ground clearence. Works with drop spindles.Corrects geometry for lowered applications. Requires use of aftermarket sway bar.