Originally Posted by Russ Roth

This is the way for you to go and the best, easy advice so far. Most Campy cranks are 135 bolt pattern, yours included, which means the 39t on there is the smallest it can go, there's no help for it. If the BB is still good, this will bolt right on, you'll have to drop the front der to fit it and retighten the cable, take a link from the chain, and you should be good to go. Planet cyclery has you BB in stock for 32.00 if you need a replacement.