I hope to be getting a TREK 1200, from a family member, it's an older model, probably 15+ years, not completely sure however. Anyways, it's in awesome condition and I want to put a flip flop hub with a track/freewheel or just solely a track in the back, but as I have been learning, some newer bikes have vertical drop outs that may make this impossible or not desirable. I dont have a way of looking at this bike at the moment, so I was wondering if anyone knew if a bike like this would work or am I better off getting an older 70's road bike for this purpose?