My dealer installs the Banks Cat-Back system for the Titan's in the Armada's before they send it off to a local muffler shop that modifies the piping after the muffler to clear the independent rear suspension. Has anyone here done this and how does it sound inside the cabin. Or if you have a Titan and have this exhaust, does it have a lot of Drone in the interior? The manager at the Nissan dealer has done this to his Armada and going to ask him for a test ride so I can listen to the inerior cabin noise due to the muffler before I do the same setup. This won't happen till next week so I just thought maybe someone has already done this and can describe the interior noise levels beforehand.