In my goal of fixing the stupid oil leak on an excellent running new 74' 350f with 22k miles I've noticed some flaking to the surface of a few rockers. There's little wear on the cam that doesnt seem too bad but Feel I need to replace them rockers. I have a 550 parts motor any chance the rockers will swap? I know there different part numbers..... It has a bunch stripped bolts, so I'd rather not take it apart to find they dont work....Or anybody have a few rockers they want to sell?