Classic Chambered Powersticks

Hey everyone, I just joined yesterday and was wondering if anybody here has any experience with Classic Chambered Powerstick mufflers. They are a chambered muffler, kind of like a glasspack but without the packing and a bit different (better?) design. They sound SUPREMELY bad-*** though, even more so than Flowmasters in my opinion. There is a sound clip on their site of a '73 Charger running with them, it sounds INSANE. Check out their site here: http://www.classicchambered.com