Well, I think I'm going to get a chance to work on the 550 very soon because I should be finished with the 500 in the near future. I've been spending time this past week working on cleaning up the wiring on the 500 and the wiring is almost finished. Now I just need to figure out the spacers on the front wheel so that I can mount the front brakes & fender. Then I can take this thing out for a spin!
(Of course, I would be much further along on this bike if the weather would stop being so nice. It's been awesome all this past week and I've literally been out riding the BMW for hours every day.)
Also, regarding the Busa motor, one of the teachers in my MSF class told us, "A Hayabusa is the cheapest motorcycle in the world to buy. You only end up making one payment on the thing before it kills you!"