Thank you! I am just interested in the original parts because I like them and they will make the rebuild easier, so I am not after an exact restoration.

The frame isn't quite as good as it looks in the picture, but pretty decent and I was figuring $75-100 value. The crank turns pretty smooth but I think I am going to repack the bearings while I search. Never done it, but sure I can find a guide on here or elsewhere.

That is pretty much what I was figuring about the 600s vs. 105s. Hopefully I can find some nice 600s on another bike before too long, I am super anxious to get riding!