Are the newer 350\'s good motors? I have a chance to buy a '91 350 that has a bad bearing. Be a good rebuilder. I understand these motors are the one-piece rear main seals and the centerbolt valve covers. Are these motors desirable? Would it be worth rebuilding? Can I use an intake to adapt a carburetor to it? I want to use this motor to power the '82 K30 I got from Shawn. Just rebuild it to a good, strong daily driver.