Where is a good place to buy the a weld on flange for my hks, and average pricing to get it done. My piping is aluminum. Also were is the best place to weld it on my piping. I was goin to weld it on the hot pipe right after the turbo, if you refer back to the pics, basically right in front of were is says mazdaspeed. Then relocate my maf pretty much directly under where it is now on the cold pipe. Suggestions and help.