Hotchkis 78-87 Chevy El Camino / 78-88 Pontiac Grand Prix Double Adjustable Upper Trailing ArmsHotchkis Sport Suspension 1201AA 1978 1988 A G Body Double Adjustable Upper Trailing Arms . Improve the traction and handling of your GM 78 88 A G 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