46,
That brings back memories, That guy has pushrods correct? Ours did & we had no idea how to set them. Tell us more about the parts search & actual build. Looks like a SL model with the swept pipe. I had a 350 SL which was 324cc motor. I ported, polished, added a 450 carbs set & bored to 368cc kit.
It was too hot for the dirt. It would bury a knobby down to the hub in the sand, very fast too as I added 10 teeth to the rear sprocket from I have no idea. Just centered it & welded it to the stock one. Had a ball with it. Oh rejetted doun 3 steps on idle & 2 on the main jet. Back then I would ride on the back wheel as long as the road was good. You bring back great memories getting cacti in the back screaming across the desert. I wore leathers & cheated!!! What fun!!
P.S. did you split the cases too? We would do that to keep the cam chain with no masterlinks.