I work a couple buildings down from H&S's headquarters, and monday (my first day here) my eyes about popped out of my head. I saw those boys test driving their 6.7, smoking the tires off of it. Apparently it has the everything delete exhaust, and dynos a maximum of about 480 rwhp. I don't doubt that a bit considering how fast it was moving. There wasn't much smoke either. It sounds really nice too; kind of a mix between straight piped LMM, and 6.4.