High Flow Cats?
And also will the cut outs pass emissions if they are capped on a visual test? Thanks!
Another thing to keep in mind is that the farther away from the engine the cats are, the cooler the exhaust gas will be, and therefore, the less effective the cats will be. Try to keep them as close to the end of the headers as possible. Check out these pictures for a good Custom Y-pipe setup:
<img src="http://www.metalreviewcentre.com/images/PDRM0122.jpg" alt=" - " />
That is a pic of my car. Those are Hooker LTs with Carsound cats and a custom Y pipe. I have more pictures at the link in my sig.

