I'm on the list as one bike but I forgot I actually have a CB550 F2 somewhere in pieces as well as the original CB550 F1 in my avatar. (about the only thing I can remember about the F2 is it was maroon and had been in a front end accident)
Also have most of 550 engine plus a CB650 crank, rods, cam etc for spares.
The 'joys' of having bikes strewn across the globe (they are in Britain)