These parts were used under various Chevy trucks up until the early eighties when they switched to the GM 10 bolt front axle and NP 208 tranfer case. I agree that while the engine may not be needed having the correctmanifolds, transmission, transfer case, and axle would be nice. As for the frame in the 67-72 trucks, a better chassis could be made from the 60 Chevy truck, they shared rear end designs so with a little scratch work it probably could be done.