Hotchkis 64-72 GM A-Body Front Performance Coil SpringsHotchkis Sport Suspension 1916F 1964 1972 GM A Body Front Lowering Coil Springs 1 in. Drop Big Block. Lower your Chevelle El Camino GTO or other 64 72 GM A 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