10-12 BOLT REAR DISC BRAKE CONVERSION. THIS KIT MAKES IT A SNAP TO HAVE REAR DISC BRAKES AND PARKING BRAKES. IT INCORPORATES A DRUM STYLE PARKING BRAKE SYSTEM THAT ELIMIATES THE TASK OF ADJUSTING THE CALIPERS. KIT INCLUDES: 12" ROTORS, GM CALIPERS, RUBBER BRAKE HOSES, BANJO BOLTS, MOUNTING BRACKETS + ALL NECESSARY HARDWARE. KIT SHOWN WITH UPGRADED ROTORS AND BRAKE HOSES. WHEN CONVERTING TO REAR DISC BRAKES, BE SURE TO USE A 4 WHEEL DISC PROP VALVE. WILL NOT WORK WITH C-CLIP ELIMINATORS.