Yes, just have a decent exhaust shop add high flow cats just after the flanges and before the rear O2 sensors. Look at the Kooks catted x-pipe as an example. Or you can just buy the kooks catted connections pipes which will likely not cost too much more and keep it a bolt on affair.I currently have Kooks Longtube headers, Kooks Offroad X-pipe and Stock GXP Mufflers. My wife and I cannot stand the smell while idling. Can I weld in high flow cats to the Offroad X-Pipe?