or just come up with a better gear reductions box, and put a cent clutch on and feed it to the rear, then move the ignition to a hall sensor on the now un used side. slap a little ac gennie in there rectified to feed a small lipo battery and have tht battery run the ignition system. you can get programmable ones, set the timing any way ya want. there are many posts about backwards running these on here. check 'em out, lots of good info.