I bought my 9 from that guy a year ago.
I was looking at the Blue 99 and the Green/Purple 00, you can guess what I choose.
He swapped out the motor on me, It's got a 02 or 03 motor in it. it runs fine so I just let it go but it did piss me off a bit. I didn't really know any better at the time, only after owning the bike for a few months did I discover the motor was not stock. He also removed the chrome rims and new tires, though I prefer the black rims I got anyway.
The undertail was also torn up, it was lowered 3" and the tire had rubbed all the plastic away, he promised me a new undertail but like you once I gave him the money I never heard from him again.
He did come down quite a bit on the asking price as well, I paid less then 4k so that's another reason I didn't do anything.
I do have his e-mail address (not that it will do any good) He also claimed to own the local 1/8 drag strip up there in Jackson.