Vehicle Compatibility: Specifically designed to enhance braking performance for 1948-1956 Ford Half Ton pick-ups, featuring a 5 x 5-1/2 Inch wheel bolt pattern with 1/2"-20 studs., Optimized Performance: Boasts big 11-3/4" vented rotors that effectively dissipate heat, ensuring greater torque on the wheel for superior stopping power., High-Quality Calipers: Uses standard GM midsize calipers with a 2.81" piston, ensuring increased clamping force, larger brake pads, and resistance to brake fade., Hassle-Free Installation: Designed for a straightforward bolt-on upgrade using stock spindles, complete with comprehensive instructions for seamless setup., Comprehensive Kit Components: Includes vented cast iron rotors, GM single-piston calipers, brake pads, rubber brake lines, bearing and seal ada.