Here's my other Trek which I got in November on CL. Happened to log on a minute after it was posted. They had many offers by the time I got there 40min later. It came to me as a complete bike, but I took the handlebars off so I could try out some other stem/bars on the rollers. A previous owner made a number of changes:

Helicomatic 27" wheels changed to 700C
Suntour Cyclone RD and downtube shifters changed to Shimano 600 SIS
normal stem changed to 70 mm
aero brake levers

It still has the half step plus granny 50/45/28.

I think I'm going to set it up for long riding and/or light touring. With rim brakes, one eyelet and one water bottle holder, I've got a couple of better choices for carrying heavier loads. I do very much like the geometry on this bike:

ST/TT: 63.5/60
wheelbase: 108
chainstay: 44.0
SA/HA: 73/73
fork offset: 55 mm
trail: 46 mm