I'd look for high flange Schwinn Approved hubs (relatively cheap) on ebay, or consider this Shimano UG hub offered by Loose Screws. http://www.loosescrews.com/index.cgi...id=24066665831 It is spaced at 126mm so it's the correct size. You would also need to buy a UG cassette (also carried by Loose Screws). I have found my 6 speed UG set up to be very reliable on my Schwinn Traveler. Are you certain you want to run tubulars on a LeTour? Just my 2 cents worth of opinion, tubulars would be too high end for a LeTour and possibly not practical if this is your primary "ride around town bike." Good luck and I hope this is helpful.