Dodge/Plymouth A, B & E Body Polished Wilwood Master Cylinder and Black Booster. Master cylinder is a polished Wilwood with machined black anodized top and is designed for use with disc/disc or disc/drum brakes. Booster is a black 7" dual diaphragm which offers better stopping than single diaphragm boosters. This kit is designed to bolt up to all 65-70 A-Body and 65-74 B and E-Body Dodge and Plymouth cars.