Man that sounds awesome... if you could get a 4.7 to sound exactly like that I'd go true duals even with power loss!
My Dynomax is dumped before the rear axle and its pretty loud, atleast from the inside... never heard in under WOT from outside. Although I'm pretty sure its loud, I get people to look all the time when I punch it. Anyways, its loud... but I don't think it sounds as good as that one does... these vids make me want to go make some fly-by vids. :rck: