throw a mbrp trail can on it and call it done. changes how the sled sounds but there is no performance gain other than some weight loss.
all the guys on here who raced those sleds told me pipes where not worth the money and time as they made the sled much more finiky to keep in tune. best bang for the buck i found on the one i had was the reed notch from the tecpages andf vmaxjhons clutch set-up from the same place. mine ran really strong with that set-up as i was kicking 583's butts on the lake and in the trail.