Belltech MUSCLE CAR LEAF SPRING 67-81 CAMARO FIREBIRDBy recalculating the arch of the leaf spring to provide the appropriate spring rate for a lowered ride height and utilizing the latest manufacturing techniques, Belltech's leaf springs are designed to easily lower the rear of your leaf spring equipped Sport Truck or SUV by up to 4 inches depending on application. This Part Fits: Year Make Model Submodel 1973 1975 Buick Apollo Base 1975 Buick Apollo SR 1975 1979 Buick Skylark Base 1978 1979 Buick