I just bought and installed the CAT delete pipe that amdriven2liv posted. Fit perfect and was really easy to install. Had to take the tranny skid plate out and unbolt 3 or 4 hangers from the frame. I also did a muffler delete before that (welded in straight pipe).
Muffler deleted- hardly any turbo whistle, no drone on highway, sounded great at WOT (throaty)
Both muffler/cat deleted- lots of turbo whistle at idle/initial takeoff (can't hear it with windows up), some drone cruising but with music on you can't tell it from stock, WOT sound awesome....amazing at least to me
Dont damage the cat by punching the guts out. Save it for the future where you will eventually "need" it with out a doubt. Get a cat delete pipe and save your OEM cat.
^^^^Exactly, the time is coming. It's just a matter of time before the tree huggers get their way with the rest of us. That's why went with the pipe from a wrecked 7.3L truck and keep my kitty on a shelf. I may live in Ark; but I know the day is coming at some point.