I have a friend who has a pile of featherbed stuff and would like to build a special. He is considering buying a new Goldstar motor for the Norton frame. The question is...can I use a Norton gearbox with the GS motor? It is a matter of lining up two pulleys (belt drive) and getting the teeth to agree with each other. I would probably go with the RGM commando diaphragm clutch with the commando mainshaft, the GS pulley may or may not be the same style teeth. How many different styles are there? The advantage with the Norton GB is that it is already lined up with the rear wheel and is a very good trans with plentiful spares. The primary cases we will make ourselves.