If you are expecting loud from the Single Side Swept Gibson, you may be disappointed. It certainly has better sound than stock and you can hear it but it is not loud. I think it is just right and am very happy with it.
You'll like it. The one and only thing I don't like is how the round muffler is visible from under the truck on the passenger side from a side view. Other than that, the sound is nice and mellow and not too loud. It doesn't drone at all like a Flowmaster 40 does.
If not looking for a loud exhaust, you'll be happy with it. I've had mine for a couple of months and like it. It sounds really good around 2500 rpms to 3000 rpms. It has a nice rumble to it and on the highway it's fairly quite.