So I sold a kidney and have enough $$ to perform a long overdue update to my beloved YBB. Want to go 2x10 or 11, probably XT. Cant find exact plain language specs on the rear spacing required...135mm? Would rather not replace my wheels, as they are had built perfect and bad ass Hope hubs laced to Mavic 717s...if you cant ride fast, at least look cool. Anyone? Bueller? Bueller?