I had the cats removed from my Kooks X-Pipe some time ago...I liked the added exhaust sound I got and the few extra HP I gained but now the smoke from early morning cold starts is starting to get old. It obviously goes away after the engine is warmed up but now I regret getting rid of the cats. What do you guys recommend for getting some cats welded back on? The HFC from the Kooks seem to be very low profile and match the X-Pipe perfectly. Anybody know of any solution to get the same kind of cats welded back on?