Honestly, If I was back in cali at my pops machine shop, I could spin out plenty of these. I actually had plans to do so already. I have a EFI setup I'm beta testing that is similar to Hugh's cdi setup, but I am physically machining a tone ring that I'm pressing then tig welding onto a rz350 rotor and using kawasaki ex500 throttle body. It literally goes right on as if it was meant to be there. My real hot rod motor thats in the works is getting every mod I've found and plenty I'm adapting from my rd350 road racer. EFI, first year heads on a custom cam, and I'm even pursuing a roller rocker design personally. So stay tuned I have a lot of fun tricks about to be seen.