Anyone running those Powersticks(chambered exhaust)

They are just glasspacks from what I can tell. I think the "real" chambered exhaust from back in the day was hollow. The sound clip of the 73 charger sounds exactly like my Duster did when I had 3" flowtech purple-hornies (header mufflers/glassopacks) installed. I could swear I was listening to my own car when I heard that clip. I've since gotten rid of the glasspacks as just got way too loud when I was on a long drive.