I just had to mention that I have found the foundation for a new highway tourer build, a lugged steel 1988 Trek 520. God knows I'll be writing about this some more, so I'll leave it there for now.
Since people always want to know... I paid $80 for it, but I'll need a new 27" rear wheel which may be hard to source, might switch out BB and crankset, but brakes, levers, derailleurs and shifters are all good. Frame is scratched but not rusted... will probably repaint.