Figured I'd start a thread for new folks that join...
Mine is a 1984 model, red, with about 25K miles on it. Mods include superbike bars, rectangular mirrors, s/s front brake line, cross-drilled front rotor, K&N air filter, modified stock muffler (removed the big upper baffle, put a stainless exhaust cap on the end, no rejetting required). Love riding this thing in the twisties in So Cal, revs pretty high for a twin. Lightweight, easy to flick around, just enough grunt to make things interesting in those canyon roads!
Here's a YouTube clip of the exhaust:
https://www.youtube.com/watch?v=bXrSPJRoQHYOther bikes in the stable include a 1979 Honda CB650, and a 1987 Cagiva 650 Alazzurra: