Hotchkis Sport Suspension 1906F 1967 - 1969 F - Body 68 - 74 X - Body Front Sport Coil Springs 2 in. Drop Big Block. Lower your GM F - Body 2 in. Below stock ride height to give it the right look with an aggressive stance and a lower center of gravity. Our springs provide a firm but not harsh ride. Each gray powder coated spring is precision wound using the highest quality steel. Specs 2 in. Lowered Front 600 lbin Motor Big Block (Pontiac 400 Motors or BB with Aluminum Heads use 1907F)