Hotchkis 68-72 Chevelle / El Camino / GTO / Skylark / Cutlass Upper Trailing ArmsHotchkis Sport Suspension 1202AA 1968 1972 GM A Body Double Adjustable Upper Trailing Arms . Improve the traction and handling of your GM 68 72 GM A Body Muscle Cars with the Hotchkis Double Adjustable Upper Trailing Arms. These exceptionally durable control arms allow for easy pinion angle adjustment for reduced vibration and increased traction. Our exclusive Swivel Max bushings offer non binding articulation during suspension travel which improves