Me personally, I would look for another header. Only because your replacing one part of the header. Why not try and replace the entire thing. Best bet is to look for a 4-2-1 header, better flow and replaces everything from the manifold to the cat. DC makes a good one but new they are expensive, but you can find a jem somewhere. I personally have a full header/cat delete/cat back, that came with the car, that was bought off eBay I'm assuming, its got good welds and will hold up till more money and turbo comes. Good luck!