hey all i'm from New Hampshire. Been sledding a long time. Heard about this forum from a buddie and thought i would get into it. I have a 2004 Ski doo 600 sdi I have just started the modding of my sled this year. Started with getting rid of that big stupied air box and put on some Uni pod filters. Looking to upgrade to a 800 in this sled then put on a tunnel extension and then a turbo.