Hamm Headers, Dynomax straight-through mufflers with X-pipe.
Very light exhaust sound until WOT, then it just screams.

I'm going to try to post a couple sound clips, but not sure if it will work.

Idle

A few revs

 

I would leave the cats on. Around here, these boys love to cut 'em off. It makes the truck much louder, but then they have constnt problems. O2 sensors, SES light, everything. On top of that it slows them down from what I can tell.

Josh Hucks
NXS Customs

 

I've got the Corsa catback on my burb and I love em
mellow idle and cruise but screams at WOT.

 

I got the Hooker Aerochambers put on just to be different and to take a chance.
I too wanted it quiet & stock sounding at idle, but when you get on it, it definitely comes alive.

When they first put them on and started the truck, I was a little dissappointed because I wanted a quiet exhaust, but not silent...lol.
Then they revved it...hahaha! AWESOME! LOVE THE SOUND!!

This way, if your at a light, perfect sleeper, or if your sneaking home in the middle of the night idling up to the house, it is completely undetectable. But when you want it to hit hard, it sounds nasty! I love it!

 

Thanks for all the help guys, I'll change the Y pipe and put a new complete cat-back system.

I guess magnaflow is the way to go.

Again..Thanks.