i have a set of 2005 twin mod pipes for sale from a skidoo 600 mod. They can be put on a regular 600 H.O. They are in great condition. Hardley used at all asking 425 US or make me an offer. They sound great and i can send you pictures if you would like to see them. I dont have a video of them on my sled but i have a buddies who has the same pipes and i have avideo of his from earlier in the year.