Have you seen the flywheel on the efi Kymcos? They have multi-pickups and you wouldn't be able to use this as a reliable source for the standard pickup coil, not easily at least. Anything is possible, but it would be a bitch to go back to carb on any of these. If you got a really high end ignition setup then it might have parameters for multi pickup but then your looking at what, like $600 for ignition alone? Lol then a nice carb $100~. If o was gonna go all out on a 50i, first thing would be throttle body and injector swap, i bet anything that'd be 50mph out close to it on flat. The variator needs to be researched, possibly the same as other qmb/kymco style idk. The exhaust is very tiny, the header is pea shooter size, same with the intake manifold. Idk all of that is so expensive, and the efi system would be totally custom after the fact because the kymco one has the ecu attached to the throttle body directly. You could go buy a crate qmb, 4v head, big bore, big carb, for the same as what I listed before haha. Realistically with what the Cimpagno has on it, you can expect maybe 45mph TOPS on flat. The throttle body is so tiny.