i'm doing a rebuild and need to get shells. want to make sure i get the best ones and not pinto ones (what is the difference?) what should be on the box- should it say cosworth? and what should they be made of? and where's a good place to get them?

reason i ask is the man who ground my crank (he was very old and talked in thou'!) said all the bearing making companies are owned by one huge company called federal mogul and that they just re-box two types of existing bearing to give the grooved/ plain combination. was he talking shit?