Thanks for the replies. This certainly appears to be an active community.

I thought about getting a new (to me) frame for this project, and that is certainly the advice I'd give to someone else, but that kinda defeats the purpose (and challenge) of this being a vintage "spare parts" build for minimal cost, and frankly the parts I'm using are low-to-mid range. If I end up with a 30 pound tank of a tourer, so be it. If I wanted it to be lighter, I could cut weight from the rider (and frankly, I really should).

I do, after all, have my other vintage bikes.

Since I don't know the brand of the frame, maybe I'll use a Japanese coin for the head badge. That way it will be worth something. (Let's see, 100 yen in 1973 equates to 282 yen today, which corresponds to 1.89 US$.)

I too like to build and repair old bikes, even down to refinishing cones from cup-and-cone bearings. I also work on old cars, old watches (wrist & pocket), and anything else that strikes my fancy, being a semi-retired R&D engineer/scientist.