So i'm in the market for a newer sled since I just sold my '01 800RMK. I hear alot of talk on the Polaris site about their 600 and how it does pretty well. There are lots of big bore kits, pipes etc available for it and NOS as well, But I am wondering if the 06-07 summit Revs are as capable of a machine? Are there pipes and cans that wake them up? Has anyone put NOS on one and how well does it work with the SDI? I liked my 800 well enough but I think that the type of riding I do I could be happy with a 600 if I had the NOS for when I really needed it. Any imput is appreciated....Just trying to make an informed purchase... thank, Curt