I'm replacing my bottom bracket with a Phil Wood stainless steal bracket and it seems necessary if not a good idea to replace the Cup Set as well. I've looked on Sheldon Brown & Wikipedia without feeling certainty in regard to various sizes and the inner workings of the bottom bracket. I own an English made bike which seems to make a difference. I'd like to replace everything but the chainring, pedals and crank arms, any advice and additional knowledge would be helpful. Thanks!