Helix 1968-1972 Gm A Body Chevelle El Camino Upper Tubular Control Arm SetHexlix tubular upper control arms make the perfect upgrade for your 1968 1972 A Body car. suspension. These control arms are specifically designed for improved geometry. Upper arms come complete with bushings, ball joints, powder coated black. Simple bolt in installation with no modification required. Helix 1968 1972 GM A Body, Chevelle, El Camino Upper Tubular Control Arm Set Feature: No Modification Required! Feature: Much Stronger than Factory