For use with MW Olds / Pontiac housing ends installed in stock position. Includes 5/16" thick 7075 aluminum caliper mounting brackets, aluminum brake hats that are drilled to accept 5/8" drive studs, slot-drive rotor attachment system, all required mounting hardware, and MW 4 piston calipers with linings. Installation - Service instructions can be found on Service Bulletin #0035 and #0086