i run 20-10-10 8 paddle skat trak extremes on my 700 raptors.. they work very well.
both 700 raptors have full exhaust, filter, and fuel controller.
when you run competition hill, they'll pull the front wheels up on take-off from 2nd gear, so you gotta lean over the bars a bit (or atleast i do, i'm only a buck 60). 7 paddle skats may eliminate this.