I'm finding a lot of threads in the search about replacing the factory muffler with Magnaflows, Flowmasters, etc., and a lot of threads about deleting the resonator, but what about deleting the factory muffler? Mine has started to rattle quite a bit, most likely loose baffles inside. The local muffler shop said they'd cut it out and slap a straight pipe in there for $40. The resonator was gone when I bought the truck, but even so it's honestly pretty quiet right now. Louder would be fine with me, but not "can't stand behind the truck without covering your ears" loud. Anyone have any input on this? 4.0 motor, factory cats, exhaust exits straight out below the rear bumper.