1964-77 GM 10 / 12 Bolt Rear Disc Brake Conversion Backing Plate Splash Shields. For Staggard Shock - Bolt to Flange. There is two rights. For all rear disc kits that use the rear calipers. will work on all inline tube rear disc conversions - DBK1012, DBK1012X, DBK1012BX, DBK1012B, AFXRD05, RWBK1012 Calipers INLINETUBE Part Number DBK1012C for the pair 1979-85 Cadallic GM Part Number 18R791 & 18R792 Used on 79-85 , , Rotors - 79-81 Rear Disc 11" Brake Rotors. 5560, GP5560, BR 121.62025 or Inline tube number, Pn# - ROT04-1964-77 GM A-body, 67-81 F-body, 78- G-body Rear Disc Brake Conversion 11" Rotor. Sold as a pair - rear disc conversion. or Pn# - ROT05-2 pc 1964-77 GM A-body, 67-81 F-body, 78- G-body Rear Disc Brake Conversion 11" Cross Drilled and Slotted Rotor. Sold as a pair - rear disc conversion. Fits any GM car with the 3 1/8" bolt spacing and hole in axle flange of 2 1/4" this is hundreds of gm cars and trucks. and car that you are taking off the 9 1/2" drum brakes. for non staggered shock cars (shocks on the rear of the axle ) This kit comes with everything you need to install the first time. caliper brackets, axle hose brackets and the bolts to hold all together.