Hotchkis Sport Suspension 1902 1978-1988 GM G-Body Lowering Coil Springs Set (4). Lower your Grand National El Camino Regal Cutlass or other 78-88 GM A/G-Body car with Hotchkis Sport Suspension lowering coil springs. These springs will lower your vehicle on average 1 in. from factory ride height enhancing vehicle looks while lowering the center of gravity. The increased spring rates offer improved performance and handling while offering a comfortable ride. Each gray powder coated coil spring is precision wound using the highest quality steel. Specs: 1 in. Lowered Front 600 lb/in Rear 135 lb/in. Motor: Small Block or Big Block with Aluminum Heads and Aluminum Manifold. Note: Wagons and El Camino's should not use rear springs without the use of 31750 air bag kit.