Well, ole Super Trooper decided my truck was a little too loud '02 Cummins, with 3" downpipe to 4" straight. Need to quieten things back as close to factory as possible, but don't want to give up how much better it runs straight. Was looking at an 30" FTE Resonator Muffler, or a Hushpower. Anyone have any experience with these, or any other recommendations? Thanks in advance!