anyone make such a thing as a 5 H.P. B and S propane powered Tiller? the Reason I'm asking is I want everything to be on a Fuel that I can store incase of a national emergency, and I have determined two 500 gallon propane tanks, is the way to go. So when a Gas shortage happens, I should at least have the ability to Till up my garden(for my food) and not rely too heavily on purchased goods. Also Fuel for the Truck and house heat as well.