I know the bike. The owner is very active on the "other" Thunderbird forum. I don't know if we can link to other forums here, so I'll just say that it has 1600 and Thunderbird in the name. You can Google it from that. For what it's worth the owner seems like a pretty straight forward guy, and he took good care of the bike. So if you do buy it from him you will be getting a well maintained bike as far as I know.
Thanks Lantesh. Amazing how worlds collide, eh?
I will try to go poke around other Thunderbird-specific forums and see if I can figure-out who it is. It's always great to talk to an original owner of a used bike.
I may run out of patience trying to unravel the mystery owner, but we'll see.