OK, Jeff. Since the Berlina diagram is done, here goes. Hollander has already done it! It's called the Hollander Foreign Interchange manual. Problem is, I don't know if it's in print anymore. The Alfa pages I have are dated 1982 and coverage is from 1963-1979 for Alfa to Alfa interchange. The Alfa section comes up on ebay from time to time. What it doesn't list are the REALLY cool interchanges like when the autoparts guy laughs at your request for GTV brake pads, say it's a VW bus instead. Or that early Delcotron alternator brushes fit Spica fuel pumps. Now THAT'S a list worth having!
Series 1 Euro 1750 GTV
Series 2 USA 1750 GTV