Re: Which exhaust??
The monster has a good point. But if you are set on the dirt bike pipes then, unless the dyno results were dramatically different, then choose the one with easier fitment. Also, the other day I checked crmachine website and the fire breather header pipe is currently out of stock.
check through some posts by Davezilla as I think he has used both.
Just a chimp with a gun and an idea we should be free to ride our machines without gettin hassled by the Man.