FWIW, 2 members of our family were w/ Trek from the 80's through '03. You cant go wrong with any Trek that was built in the "70's,80's, up to the mid-90's. They were still a very good touring/racing machine then, but like Cuda say's, just change the hub/wheel out.

(And finally, as far as avoiding certain Trek's, some people from WI would maybe tell you that they were always a super-high quality ride until the mid '90's (That's my opinion too, anyways). When Trek laid off many of the Waterloo workers who were very good at their jobs, and closed the Whitewater plant, stripping it down to a basic Skeleton Crew so that they could send the work oversea's to unskilled, cheap labor, they lost a lot of respect and quality. I ride a handmade Trek MTB for serious offroading, but I refuse to ride anything made after '95 because of what they did to the employees in WI. But your's would be from the very good era)