This Shop Line Kit will replace part of your exhaust system with a mandrel bend performance dual exhaust system on your 1963-1972 Chevrolet C10, C20, C30 GMC 1000, 1500, 2500 (1/2, 3/4, 1-ton) application. All Wheel Bases. 2WD only. 8 cyl (needs two intermediate pipes on either side of the motor). Please note: This system is designed to replace your factory OEM exhaust starting from the crossmember back. YOU MAY NEED TO SUPPLY AN ADAPTER FOR THE 2.5" PIPES THAT CONNECT TO THE FACTORY INTERMEDIATE PIPES. If your exhaust has been replaced or modified previously fabrication to the existing exhaust on your truck may be necessary for the proper installation of our kit. Trucks with modified suspension or body lifts may also require fabrication of the exhaust or truck for the proper installation of our kit. This kit is designed to fit all wheel bases, but may require additional pipe for longer applications or trimming for shorter applications. 8 cyl (needs two intermediate pipes on either side of the motor). GASOLINE ENGINES ONLY *Product disclaimer: THIS IS NOT A COMPLETE "DO IT YOURSELF" kit. It is recommended that this kit be installed by a professional. Fabrication may be required. Any type of suspension or wheel/tire modifications may affect system clearances. We do NOT include any portion of the exhaust in front of the crossmember. Additional parts or fabrication will likely be required.