Rather than use the crusty-rusty stock disc-brake calipers, we bought new calipers (part Nos. 90040 left; 90039 right) from AutoZone. To improve our Chevelle's braking performance, we opted to install new Performance Friction carbon-metallic brake pads (part No. 00524). The PF pads are extremely resistant to brake fade and fit into the caliper just as the O.E.M. pads do.