Brake System - Econo - Disc Conversion - Rear - 1 Piston Caliper - 11.25 in Slotted / Dimpled Rotors - Mechanical E-Brake - Iron - Natural - GM Metric - Ford 9 in - Kit Vendor PEM MPN B-On-DBK-W-E-DS Truck Freight NO With E-Brake Drilled and slotted rotors