pretty nice find. While the 550 doesn't have the oomph of the 750, I still love my 550, I think you will too. It pulls my wife and I up and down the the blue ridge parkway here in VA without complaining. (Granted, the two of us together MIGHT break 250lbs.) If you live in Virginia, I have a bunch of parts sitting around that I could be persuaded to part with, including a couple of sets of exhaust. (Neither in fabulous repair, but one that is fair.) I would also recommend digging up a NEW wiring harness, which, I understand can be had for $70-80. I spent TOO MANY FLIPPIN HOURS trying to figure out what was wrong with mine, and it turned out to be many things, including a bad headlight filament that was burning up main fuses.
Maybe one of these boys knows where to get a good wiring harness? I know they're out there.