A friend of mine put a couple glass packs on his Jetta. They sound NICE! Also on his BMW and they sound decent.
Glasspacks don't sound good on everything...but the cars they do...it's amazing.
I've never heard one on a turbo 6 yet. I uh....bought one of those fireball style glasspack mufflers from ebay and havn't installed it yet. I wonder what i'm in for.
It has to be better than my exhaust ending under the shifter. (After the cat)