I'm in NW NJ, not sure if that helps ya, but you would be more than welcome to see and hear my exhaust if you are ever in the area (Vernon Twp. , Sussex County). I started with the 4" BD Power exhaust (turbo back). I thought that the BD sounded good until I heard Chris T. 's (DieselB59) 6" stacks, didn't take long 'till I added one of my own. All of my exhaust work has been done at Auto Wurks Diesel (as a matter of fact, all of the work on my truck, that I didn't do myself, was done by Auto Wurks). Give them a call at 973-226-7800, you won't be disappointed with their work.
Scott W.