I made some progress.
I extended the wiring up front, arranged the switching, changed the motorcycle starting system to a automotive system. Had a problem killing the engine so I had to add a toggle switch to kill the ignition. As I change wiring I start it to make sure I don't break something. (like not being able to stop an out of control engine). I did notice that the first cylinder is smoking a bit. I may have to do some engine work on this after all.
Then I worked on the controls a bit. I decided to use the non-working parking brake as a shifter for the 6 speed. I added the clutch lever to the gear shifter and managed to get it in the right spot that I think should work.
I changed the front gear on the chain drive. Went from 17 teeth to 11 teeth. I think that will get us in the ball park of a usable gear drive. Also found in one of the boxes a boatload of 530 chain. So I cut a new chain 1 link shorter and mounted it up. Plenty of chain adjustment to take up the slack.
I have some work to do on the headers, but it may take a while to do that.