I walked into the LBS that I occasionally wrench for and there was a TREK 600 in the used section. I checked out the vintage TREK website. It says it has a 531 C fork and main tubes. What were the seat stays? Anyways the only thing that doesn't look original on it is the seat. Right model but natural leather instead of white and the handlebar tape is different. The rubber plugs from the brake calipers are gone. But I think a steal . . . I paid $125.00 for it.
Howard Darr
Clymer PA