infact I will expierement. I will take a section of the same tubing we used on this exhaust… run a bead of TIG purged stainless filler weld. then a weld just like I did on this exhaust with the MIG 75/25 with 309L wire, then one with 309L with 100% argon MIG, then one with 100% argon with copper coated wire and finally one with 75/25 and copper.
throw it in the back of the truck and leave it in there for a while. Ill drive through rain, snow, salt spray… i do 300 miles a week. and post back. :thumbup