Re: can i still get parts for this motor?
I would certainly go for a 10hp over (later built) 9.5. And a '61 ought to have good roller bearings, 1000 little improvements over older models, etc.
Condition is everything with any motor over 5 years old though. Can't say what it's worth without testing compression, checking the l/u oil, running it a bit, and having a good look over it.