Ahh, thanks for the drawing. You're going to bolt it on? I know that some have had difficulty with the bolt-on approach, due to thickness of the flywheel. You might need to have some meat machined off the back. I was just going to get it cut into the back of a flywheel, if I could find a machinist with that capability.
But if you're getting a laser cutter to do one, I would be game for doubling your order and maybe we could save some money!