I'm moving this question over here from the Road category. I have a 1991 Trek 1200 with the RX100 groups set which has indexed friction downtube shifters. I am trying to turn this into my trainer bike for rough weather that I am trying to spare my tri bike. You can get old stuff on eBay and the like, but I am having trouble figuring out exactly what parts from the late 80's or early 90's will fit on the bike. I don't think Dura-Ace is compatible but I'm pretty sure that Ultegra and down are. Any advice?