You may want to get a quote from my friend Peter. He went to school and is certified to weld all sorts of stuff. He currently works at Aluminum Outfitters and fabricates/welds all sorts of aluminum and stainless stuff for boats (t-tops, poling platforms, wakeboard towers, etc...) He has also recenlty welded a few o2 bungs for wideband guages for a few 240 guys and he had to cut and reweld a braket on my stainless DP becuase it was banging into something. He has both MIG and TIG machines and can lay down awesome looking welds. Anyhow, he knows his stuff and stands beind his work. I'll PM you his number.