BBQ a whole Cow.
You can get some bricks make a fire pit and use charcoal, My older brother told me about a guy that he knew heated a 4 cyl block with charcoal, added ribs to the bottom end. I don't know how Nickel arc rod would work. It is expensive. If you have a gasket to use for a pattern you could make or order the plate from Ufab, some tubing and carb plates . I made a spider leg intake for my corvair powered/dunebuggy. I machined the intake portion of the combo-head-intake . added more carb flanges, then built the manifold like a set of headers . 3 pipes coming up from each side to the carb box. It would pull the wheels up in second gear.