Like I said, I have a proper muffler delete. I know these won't be a direct fit, but like the non-Pzev legacies (dual port header), would I be able to have a shop make it fit (adding a cat, adjusting the route of piping), just as if it were a non-pzev 05-06, which you CAN add UEL because of the dual port heads which everyone makes. I've done a lot of searching around, really want some legitimate insight into making it work and not "Oh just leave it alone it's fine how it is"...