I think I would rather use aluminum than stainless, it conducts heat a lot better. My welder is recommended for aluminum use with the $55 kit they sell. I want the intake to still be separate from the headers, I would rather not have to re-do it when the headers burn out. I would like a set of fentons, I think.
I guess I'll get some stainless and aluminum tubing and practice and see how good a weld I can do before I make a decision. I do have a spare head, a spare engine even, on a stand in my garage to fit everything to.
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1950 Chevy pickup with '62 261, 4 speed.