glass packs

has anyone put glass packs on their 4.0 cherokee? does it sound stupid (i.e. that terrible noise that imports make) or does it make for a good throaty sound?

They sound pretty good on a 4.0L when at 3k rpm - 5k rpm, below that if you can even hear then due to the cat then it sounds a little mad max but nothing too bad. They sound better on a 318 though.