Campy 980 RD
 

A friend just gave me most of one for a rebuild I'm doing on my old Trek - mostly Triomphe cranks and calipers, SR levers and headset.

I need to find a hanger bolt and pulleys for the 980 RD. Are both of those parts going to be pretty interchangeable with other Campy RDs of the general period? If I were to find a cosmetically chewed up RD from a different group but from somewheres in the late 70's to mid 80's, could I just cannibalize to make one complete 980?

Cudak? CV-6? Tullio?

The 980 uses same pulleys as gran sport/record/nuovo record/super record/c-record/valentino/victory/etc etc, so no problems finding those. Hanger bolt is different story, these varied somewhat from derailler to derailler model, and interchangebility could be a problem.