I have TWO Honda EU2000i generators with very low hours for sale that can run on Propane, Gasoline and Natural gas. It is in very good shape and has been very well cared for and runs flawlessly. It takes literally second to swap from one fuel to the other. You can see this conversion in action here, (This is not my video) This is an inverter type generator, which puts out pure sine wave power that can safely run all electronics, as well as appliances, fans, power tools etc. You can run this straight from a standard 5 gal. propane tank, and it can run up to 72 hours straight on one tank. Not to mention that propane is cheaper than gasoline! I have 2 of these, one standard and one companion model, $900each. Both are converted for tri-fuel. BUY THEM BOTH FOR $1700 and I will include the connection kit to link them, a full 5 gal propane tank with DUAL regs, and hoses for both.