I read your smokstak thread and am still confused, except for the part where it says you can not interchange a half speed distributor with a full speed distributor. I would think if you changed what ever is in between the distributor and the idler gear at the same time the distributor would work????
I am trying to modernize a 1965 vintage VG4 to electric start. The parts I am planning on using are coming off an older VG4. The older VG4 has the 3 inch round holes in the sheet metal at the back of the engine so you can clean out schaf from around the cylinders. That is why I think it is older.