i talked to a person from here in the forums but i dont remember who.he has one done and running on gas.he said it runs equal to a G-62 but it has a little more power and a lot smother being a twin but he said its a great runner,thats why i converted one.D&B engines sells one for about $900.00 without mufflers so i think mine is well worth it for how much i have into it.ill send you a PM.