Aaron,
As you probably know by now the Shimano components in question are 1st generation 105, generally designated A105 and called "golden arrow" and sometimes "archer". I had a full group on a Taiwan-made Ross Signature that was '83 vintage. Unfortunately I let this go but I have a few bits and pieces that I've picked up by way of ebay. For some reason, it seems less common than either 1st generation 600 or Dura Ace. By the way, I'm looking for a front derailleur in reasonable condition. If anyone out there has an extra, please contact me off list.
John Wilson
Greensburg, PA
USA