I considered the precat gutting, but after talking to Greg(DemonSVT), I decided to buy the headers. Apparently the factory manifolds are poorly designed, and in Demon's words could never match the flow of the headers. So, I guess we'll see.
2000 SVT silver/blue #1699 of 2150 14.793@94.88 Sho-Shop off road y-pipe for sale($75)