My preference would be a nice light steel frame and I would opt for something in the mid/late 90’s with a freehub and a cassette. Finding a good freewheel these days is tougher, more expensive with less gearing choices.
Ideally the frame has Uluegra 6400/6500 running 8/9 speed cassette with STI shifters. Dura Ace 7700 is wonderful if you can find it. Condition is everything as older parts, especially NOS, are hard to find and expensive.
FWIW... I ride aluminum, 7 speed cassette with 126mm dropouts, and downtube shifters.
John
Edit added: With everyone offering Shimano compatible drivetrain components, I wouldn’t even consider Campy.
Last edited by 70sSanO; 02-07-21 at 10:10 AM.