i wish i could do stacks alas i dont have a cummins, i have pondered the idea and instead of rolling coal id run propane flamethrowers with em, all it is nos line and a nos solenoid with a propane tank on the other end with spark plugs in the stacks. thought about 2 6" haha.

 

on that note^^^^ I had straight pipe on my 5.7 and it sounded good. But it was wayyyyyyyyyyy too loud for me. Couldnt hear the stereo at all even real loud. Going by guide rails where the sound bounced back was horrible.
Had a cheap thrust muffler put on and im so happy with it now. Except the typical 5.7 low rpm droning.

 

If its a 5.9 gas don't put a stack on. Stacks are stupid unless black smokes comes out. If it is a diesel, then I'd go straight pipe. But I'm assuming it's gas since you have a glasspack. The extreme isn't louder than the glasspack so I'd cut your cats off and add a second glass pack. If that ain't quiet you might need to get your ears checked . also long tube headers and a hotter cam wouldn't hurt

 

yea you want extremely loud cut out the cats and get an xpipe and another glasspack or 2 flowmaster super 10's.

 

I've never heard of that propane thing that sounds badass! Holy ****

 

I know you said you didnt want cutouts but they get super loud on mine with my setup......like ......redneck loud

 

For maximum noise, get rid of the stock cats, then just about any muffler is loud

 

+1 on cherrybomb extreme

Don't run straight pipes, lose low end power an can cause engine issues later down the road

 

to avoid confusion its a 360 lol, u guys seriously havent seen this?-

 

^^^holy s**t(wtf it censored me.lol) can i get that coming out my tailpipes for the people that want to tailgate me.lol