Because I'm riding a Dura ace group and now I'm having lightweights with a campa body. Yes I know campa is making a body for Shimano.... but I'm wondering if there is anonther "option"
Assuming I'm hearing you correctly ... Since the 10-speed campy cassettes have more narrow spacing and you only want to use 9 of the cogs, You'd have to find a custom spacer kit to get the spacing to match 9-speed shimano. Don't know if that exists anywhere. Why don't you just use the 9-speed campagnolo cassette instead? I think the spacing is the same as shimano 9, but it would probably need a simple derailleur adjustment. Is that too simple a solution?
These are the two guys (that I know of) that sell conversion kits, but don't believe either sell the combo you're looking for.