Jigga - I have the JBA shorty's and the Corsa Sport exhaust. Sounds real good, pretty loud, mean sounding. Didn't notice much of a difference, but I don't think most people would in an 8k Lbs. truck...But still worth it to listen to your muscular 6.0
-Grim
2003 Sunset Metalic Orange H2 - Breathless Stage 2B, HID's, Gobi Rack & Ladder.
2003 Millenium Yellow Z06