my buddies stock 61x 701 sj is a turd, i just bought a waveraider with trailer for 700 with a 62t 701 and swapped with my 650 sj, sold the now 650 raider to a buddy for 400 with the trailer, he knew it was a 650 and thats damn cheap for a nice trailer and fully functioning ski, and with ltd factory pipe it hits wayyyy hard. The dual carbs are NOT as hard as everyone says they are to tune dont be affraid to jump in and make your ski your own, read read read then gooooo. ltd chamber is designed for bottom end, and honestly wot isnt that fun all day