I have a buddy who converted his cj to propane and a couple of other guys with samis on propane. On a mpfi engine you will lose some h.p., but on a carbed motor it is what we call poor man's fuel injection. Runs great and clean too. When my yj goes trail only status I plan on propaning it. Right now my trail rig is an 88 xj wag. and if I have too much trouble with the renix I plan on propaning it. I will lose some h.p. but you can really dumb down (simplify) your motor. You just need an h.e.i distributor, Give it 12 volts and run it.