Oh, NM, when I read "strip" in the OP I thought you were stripping the paint.

Those frame sizes are estimates, but pretty close. Level top tube '80s road bikes are easy to eyeball just by the head tube. If you look at a touring bike it can throw you off, though, since they have taller forks, thus smaller head tubes than the same size roadie.

That Univega practically has a touring rear triangle. I have a long rear triangle bike and it's nice and smooth on rough roads, kinda squishy in the BB area when I stomp on pedals, though.

That Uni has a pretty tall fork, too, that's a big bike.