Did you notice any performance gains with the Aero Turbine and deleting the cats? I read up on the muffler and really like what I found out... No packing to fall apart like in other mufflers (magnaflow) yes and that happened to me before...
Truck sounds great BTW! I might just weld in the muffler for now and leave kitties in...LOL
Packing on mufflers kinda sucks. With a fiberglass packed muffler, it only takes a few months for them to start getting bored out and going back to their own ways.