I had one in bits.
I found it in a garage attic during a home inspection back in 2013. Two frames, forks, dissassembled engines, etc. Nothing was labeled, and everything was just thrown in random boxes. Patrick and I paid $500 for the lot. We spent a month off and on trying to assemble a rolling chassis and got hung up by a missing front axle. The axle proved to be very difficult to find, and didnt cross-reference to any other Yamaha street or dirtbikes.
We ended up selling it all a few months later for $5k.