Hotchkis Sport Suspension 18390 1963-1972 C-10 Truck Rear Suspension System. Install the Hotchkis Sport Suspension Rear Suspension System on your 63-72 C-10 Pickup and gain vastly increased handling and control. This kit combines a full length adjustable track bar Hotchkis Tuned/Bilstein shocks new shock mounts and all necessary brackets to make your C-10 hook. This system is a much for any C-10 owner looking to gain maximum performance and traction whether it's at the autocross road course drag strip or local cruise in. The full length track bar system is designed to be adjustable so it works at virtually any ride height. By switching to a full length track bar versus the short stock bar unwanted side to side axle movement during suspension travel is virtually eliminated making handling much more precise crisp and predictable. The included shock relocator brackets move the shocks into a more upright position making shock dampening more effective than in the stock location. Hotchkis Tuned/Bilstein shocks handle the bumps and keep the rear end planted under any performance driving conditions. This street friendly system is competition proven and can be installed at home with basic hand tools and is completely bolt in. PROUDLY MADE IN THE USA. Note: When using the 18390 Rear Suspension System use rear sway bar 22390R not 22108R.