I think I'm going to redo the exhaust on my '99 and get rid of the flowmaster. It actually sounds ok, and suprisingly isn't very loud. I've gotten a little older recently and really don't want to dd a loud truck, still like a little rumble but nothing obnoxiously loud. Right now it has a si/do flowmaster and turndowns. I cand decide if I want to go bace si/do or just do 3" si/so.
I was looking on jegs website last night killing time and iirc they have a 14" case and a 22" case. Which one is the one most here are running?

 

I've got a 22-inch Magnaflow (#12589) on my '05 5.3 DD and love it.

It is SI/SO 3-inch, and is nearly quiet as stock while cruising, and fairly aggressive on WOT. I know you are interested in Aerochambers, but I imagine the sound level is similar.

Most 14-inch applications I've heard are going to be louder than what you want.

 

That's what I have on my 08. Just want to try something different. I got a 4x9x14 magnaflow sitting in the shop, but I ran that one on my 00 and it's louder than I want