The Billet-Power Rear Steer Rack & Pinion is made of all new components, including the valve and piston, and is designed to fit any classic rear steer vehicle (mounts behind the spindle). Billet mounting "pillow blocks" allow for universal mounting and the pinion shaft rotates to align with your vehicle's steering shafting. Billet finned housing provides heat reduction.All new components - Including valve, piston, seals, bearings and bushings, and pinion and rack gearsStronger rack shaft - almost 1 inch diameterMore than 6 inches of travel for full turning radiusUniversal, precision 6061 Aluminum, billet mountingLifetime ServiceabilityNote: FR1789P U-Joint is required for installation.