Maybe the generator motor can be turned in to a high revving motor for a future build? It is in great condition. I bet it could be a 9000+ RPM revzilla with a little bit of tweaking.
GX160 clone. 68mm bore with a 45mm stroke. Still would be cool to build and have on a mini bike. Just get a crank for it. I have a small generator like that with a 208 Ducar. I run it on LP. Runs quieter and handles the same loads that it does with gasoline.
