Saw the shot of the Banks dual system....I'm looking to replace the stock muffler/tailpipe on my '07.5 Quad-Cab LWB 4WD. I would like to go with a single DPF-back system. Deleting the muffler would be the easiest, but Texas is now mandating a "muffler" on all diesel pickups and won't inspect one of these trucks without it. Any suggestions?