I was selected by a team of riders to embark on a snowmobile trip from Anchorage Alaska, to Nova Scotia back in 1992. During the planning stage I was asked to pick out the sleds to use, although I eventually had to sit out the actual journey as I couldn't get the time off from work... :-(
I have some photos to add, but in the meantime, here's a link to the Bear Brook State Park's Snowmobile Museum, home to one of the sleds that recorded 10, 252 miles and made the Guinness Book of Records.
I will be back with more to this story, Photos...
http://www.nhsnowmobilemuseum.com/gallery/