Here is a sound clip of my LS2 with Hooker long tubes, back, x pipe, and 3" stainless all the way back with Dynomax Ultra Flows.
Quiet and almost subdued at idle, but get your attention when you get on it. There is a Speed World Challenge C5 Corvette that races with our club, this exhaust system sounds a lot like it.
Jeff
Sorry I couldn't post it here because of invalid file type, but if you don't mind going here you can hear it.
http://www.pro-touring.com/forum/showthread.php?t=23760