What are trying to do right now. You just mentioned welding a pipe thread in radiator , is for the oil cooler? If so that's easy to plumb together. Nobody makes a 20 x 1.5 bump tube to -8 AN , I've searched and called. There's no demand.
Are using the custom radiator with pipe bings, if so what size pipe?
Are using the custom radiator with pipe bings, if so what size pipe?