I recently inherited my dad's Farmall A, I want to restore it. It seems to have been originally outfitted to run on either kerosene or distillate. There is an extra (4th) hole in the hood with no tank under it, but there is a fuel line and shut off valve just hanging there connected to nothing. As best I can recall it also has the crank for the radiator shutters. The tractor is in storage now. Here are my questions, how can I tell if it was intended for kerosene or distillate, and where can I find a replacement for the small auxiliary gas tank? I'd like to use it as a reserve tank.