I'm looking to upgrade one of my mid-80s Japanese steel bikes. This bike originally had downtube shifters and rear spacing is 126mm.
I'd like to upgrade to STI and was wondering:
-- are the newer 10spd hubs (ultegra 6600) spaced at 130mm?
-- if yes above, can I comfortably run all new 10spd ultegra componentry on this bike? I'm guessing the newer 10spd cassettes take up the same space in the rear as previous 9spd cassettes, with the cogs and spacers being a bit "thinner."
-- any cable routing issues I should expect to encounter as I install the brifters and ditch the downtube shifters?