Cool game! I have an '87 Trek Elance that's a bit on the small side for me: battleship grey, Reynolds 531 main triangle and cro-moly steel otherwise, a dent on the downtube. It's 57cm square (seat tube c-t; top tube c-c). I'd trade for something 58-60cm seat tube with a top tube no longer than 57 c-c.
Bike built up as a 650B machine:
That dent:
More pics here:
http://picasaweb.google.com/lerner.n/Trek330Elance650B#
Neal