I have a friend who does antique tractor pulling. He runs propane and just liked to dink around with it a little. He now wants to get a little more serious and has come to me. I know nothing of propane and just wondered if anyone here knows anything or knows where I could find the need to know info. Any help would be greatly appreciated. You people helped me build a very nice camper trailer pulling 460 and hoped just maybe someone might know something.