*1959-80 Chevy , Olds., Buick, Pontiac, Cadillac with power brakes use 2 different types of master cylinders. When ordering, please state if the vacuum power unit is black (Bendix type) or gold/silver, anodized (Delco Moraine type. Prices do not apply to disc brakes - please inquire. The cylinder housing is a brand new casting, with brand new hardware and internals. We do not sell rebuilds. A new master cylinder will improve brake response and feel, and should not be forgotten! We also sell Wheel Cylinders on our site. We offer brake drums, shoes, and hoses separately if you are interested, inquire about availability for your vehicle. * M - Manual Brakes P - Power Brakes (Type available is shown in product name as either M, P, or MP. Thank you.