I just went back into the shop this weekend to polish up on my mig skills and got a little more aquainted with the tig machine. I finally figured out how to get one of those professional looking beads. This week it was mild steel but I just ordered some stainless off bay. If you don't mind I'd like to try your idea out on my own and maybe we might be able to discuss. I just need to source a lower intake manifold with all the fixin's so I can build a jig. Anyway check out the work: