I ran my for a couple of years but got sick of the drone in the cab. I probably have 200lbs of sound deadening and insulation added to help tone it down. Outside the truck it sounds great though. It sounds like a hemi should. I just drive too many miles (70 per day) to put up with the noise. I eventually took the complete sytem off and used a quieter muffler. Also keep in mind, if you like the look of the square exhaust tips you will have to order them separately. Unless Gibson changed, they ship the round tips with the hemi short bed kit. The square tips fit just fine, so I don't know why they don't include them in the first place.
The headers made my exhaust louder. Allot louder. I get complements on my exhaust all the time but I want something different. Its just a little to loud. Its pretty much an expensive glass pack. Its a straight through perforated core muffler. I like the sound of a chambered muffler myself. But hate Flowmasters. There just played out so to speak. I like the look though so I think I'm going to just replace the muffler and keep the same setup. Oh yeah and if you don't like drone, stay away!
i had that, and took it off bout 2 months ago, just sold it like a month ago. i loved it, but it was too loud for my dad (he drives the truck the most) mine came with the square tips, they look nice too. i dont think its louder than the 40's dumped