Hey Greg,
I probably wouldn't be a good one to ask this question because I happen to like 450 DOHC bikes quite a lot.
All that aside, without seeing the bike, it'd be hard to say. If it looks to be in good condition then I'd say go for it.
Is it that hard to get a title where you are? Can you get a title with a bill of sale, if so, get one from him? I mean, less than 7,000 miles on it. Just my own honest opinion here. If you get it, post some pictures okay?
Let us know what you decided.
BTW, what's the deal with the VALVES?
Later on, Bill