If mine sounds like two four cylinder engines, then each of those engines is a badass.
TBSS manifolds to 2.5" true dual pipes, to (1) blowmaster resonator, then dump out the sides. The biggest gripe is the drone, which when combining flowmasters with straight pipes AND putting the resonator right under the cab....means plenty of it. I sound deadened and put a good stereo in tho, so its actually very tolerable.
These two are videos from my Photobucket. This is off a cell phone back when we first had it tuned.
And this is on a better set of cameras, cruising around in-cab. WHY ISN'T YOUTUBE EMBED WORKING>!?!
https://www.youtube.com/watch?v=ay39weXJFAU