[THEFERMANATOR]

Originally Posted by ssiredfish

Okay maybe my post was misleading......Im not changin the headers or anything in front of the muffler. I was more looking to see if you guys rec'd Borla, Flowmaster, etc.....then having the pipes come straight out the back of the truck instead of to the side. Does that help?

Pipes straight out the back does help some with the drone VS out the sides. The stock exhaust is 3.5" out the back, personally I would split it off after the muffler and go out the back with dual 2 1/4" or 2 1/2" pipes if you want duals or a single 3.5" for a single as it is MORE than big enough to flow whatever a 6.0 will need(GM used the same exhaust for the 6.0, 8.1, and DURAMAX in the early years, just a different muffler for the DURAMAX). As for which muffler, I becam,e a fan of MAGNAFLOWS. They have a real deep bassy tone to them without the cackle that alot of them get, and they don't drone as bad as some others do. FLOWMASTER will always have that beer can rasp to them which is fine if you like it, but I personally don't care for it anymore. Also there is a new company out callled JONES FULL BOAR that is making knock-off copies of all the big name mufflers for about 1/3rd the cost. I just bought a set of MAGNAFLOW knock-offs from performance curve for less than half of what 1 magnaflow would have cost.