CrewCab,
I've got the Dynomax 4" bullet style muffler(3" in&out). It's basically a big glass pack but it took the edge off enough to keep the wife from complaining about me leaving for work at 6am while she was trying to sleep. Best part was it only cost $45 from Summit Racing shipped to my door.
BTW I'll be in your neck of the woods the weekend of June 30 for brother-in-laws wedding reception. Maybe I'll be able to catch you at home to look at your beast.