So iv read about 300 threads on this but had to ask, after taking off the new MBRP I have founds this stock exhaust. Now what to remove and is the stock muffler ok? And dron is not cool so do I need another muffler also? Idk if I'm putting LTs on there or going back to another turbo setup. Ether way what's a must and need to wile I'm putting this on! Thanks for any help. I did this about 4 yrs ago but diff time and setup.

 

Isnt 07+ dmax exhaust 4"? If it isnt then it is a direct swap. Also the stock muffler will not drone as its huge

 

Will the stock muffler sound good tho? Or do I need to get another one?

 

Stock will be tame. No rasp, no drone, nothing short of a stock sounding truck. Once headers and catless y is added then you will get your tone back. Also i run a 36" muffler and its loud at drive thru so im changing my whole exhaust system soon to get a tame sound back

 

I'm surprised just the muffler will fit! Muffler off my old '03 was cartoonishly big. It ought to be quiet. Good luck

 

Hope this helps. I have a 4" magnaflow off a duramax on my nnbs rcsb it was a direct fir as far as hangers go. Muffler shop had to fab a piece to go from 3-4". Nice and mellow.

 

The magnaflow do u know how long and big it is? I want to hear it but not to loud. Still want to put the family in and ride lol

 

i just put a large case magnaflow on my 6.2 silverado, and its super quiet still, you can tell from the cab that it has it, but no drone whatsoever, i also kept the resonator if that helps any....