If you are wanting to just be loud go with Flowmaster Super 40 or 44 dumped. I've run both before and they do sound good. If you want performance and good tone start with a Magnaflow y-pipe to a 14" Magnaflow dumped. And if you still want to be obnoxious (like me!) add an e-cutout behind the y-pipe. I never go with "kit" exhaust systems. I just let the exhaust shop use their own piping.
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This is a different e-cutout in this pic. It was a butterfly type with a dump from ebay. it failed extremely quick, so I replaced it with a e-cutout from Doug's Headers.
Here's the new e-cutout.
2007 Ram 1500 QC - SOLD and bought a 2009 4x4 Megacab 2500 with 6.7 Cummins. Full Sinister EGR/Throttle Valve/dpf deletes, 4" Turbo back exhaust, Banks cold air intake, EFI Live tuning by Anarchy Diesel running 100hp Street tune. Peragon bed cover.