Complete bolt-on solution with little or no modifications necessary depending on use Eliminates factory rag joint providing a precise and responsive steering input Will also work as a factory replacement steering shaft E-Coat for maximum protection against corrosion Steel construction with retaining screws on the bearing caps for strength and durability Fits 1973-1978 GM C10 Trucks. These Holley steering shaft kits were designed to replace a worn stock one on your early 3rd generation GM C10 trucks or with an engine swap where additional clearance may be needed. With sturdy DD-style steel shafts and dual u-joints, there is plenty of adjustability for your project to ensure everything is exact and safe. *See Holley Part # 320-323 for 1979-1987 C10 Steering Shaft. It is extremely important that these steering shafts are installed by a qualified technician. Failing to do so will result in an unsafe vehicle. If installing these shafts with an OE steering box, you may need to trim the pin on the input shaft for U-joint clearance. Loctite 242, extra grease, and a torque wrench are highly recommended!!!