I had dual 40 series and got rid of them when I went 3" with the borla. I would recommend a Borla, Hooker or Magnaflow. They sound real good and no to little drone.

 

http://video.performancetrucks.net/v...df39672cfd.htm

Took this for a before and after for when i change the cam and exhaust

 

Thanks for the tips ill go with the flows I think

 

I have a flow 40 on mine, sounds good, but leaves something to be disired. Gonna switch to a bullet or a magnaflow soon after i put headers on.

 

Flowmaster 50: http://bertok.us/agreif/posthelp/Baseline.MOV
Magnaflow 5x11x22: http://bertok.us/agreif/posthelp/Magnaflow.MOV

 

heres a super 40 on mine
http://videos.streetfire.net/video/a...502ef77ba2.htm

dont mind the lope

 

Quickflows, they look weired but have great flow rates and a mean sound!

 

i got the 5.3 with the 40 series flowmaster, i recently dumped them just after the muffler and i love the deep sound, it does drown some but i needed the change, im really looking forward to switching to the magnaflow so thats what i would say to go with