They have been doing banshee efi for a while now, i think it its flat track and drag racing, but also for just playing around. Then there is the fuel injected cr500.
All of them are custom built systems. there are no kit's except for the banshee. Its extremely expensive so most guys use micro or megasquirt ecu witch works well.
Its a fully programmable universal ecu.
I think the kit is only supposed to be used on scooters or something in that line(i came across it a while back during my research).