Rear Disc Brake Conversion Kit, Fits Pre 1987 Ford F-Series Truck Rear Axle, Premium Kit, Includes:, 11.625 in. dia x 1 in. thick Cross-Drilled & Slotted Rotors, Braided SS Brake Hoses, Loaded Calipers, Hardware|JEGS Ford 9 in. Rear Disc Brake Conversion Kit for Select 1957-1987 Ford F-Series Truck [Premium Kit Non E-Brake & Raw Calipers].