Here's the video of my installed system. My GTO has ARH 1 7/8" Longtube headers with catted midpipes, Pypes H-box, and Pype Bomb axle-back exhaust.
http://www.youtube.com/watch?v=MH--MiOikHo
Info on the install:
http://www.gastiresoil.com/showthread.php?t=3362