Thanks for all the replies guys. I do on plan to get rid of my cat, if It's only going to set off a code, I think I can live with that for a week or so, until my PCM comes in. I was wanting to go with overkill. My exhaust doesn't have any flanges underneath, a lot of exhaust was cut off because of bottoming out too much, so pretty much CAT- straight pipe - glass pack. All welded together. Should I just have it all welded together again or should I add a flange and bolt on the headers like its meant to be?