Guess who got it?.. BILL :-) ..

It is LPG (Liquid Petrol Gas, Propane w/Butane) and CNG (Natural Gas) gases..

You DO need to make modifications, but its not as "bad" as people think it is..

I'm still learning more from my uncle, who has been running it for a while, in a THIRD WORLD COUNTRY..

The Octane is over 110, has little emission (alot less compared to regular gasoline), and its cheaper..

There are some complications to it, like having it being readily available.. but you can both CNG or LPG and gasoline, but not mixed together..

Actually, if you use a LPG, you start it with regular gas, and hit a toggle switch to switch it to LPG.

I'm still doing more research on it though..
And I got to talk to the Gasman.. who knows everything about gases..

~Tacoman