We have done a 700 and an 800. You just need the different motor mounting plate. Some of the cooling system had to be fabbed up using new pieces from the auto supply store. The electrical was a slight PITA, but nothing too bad. On the 700 we used a dynoport 800 pipe. It took a couple days of working just in the evenings, but no more then 10-12 hours total, with no guidance. Not super easy, but not overly difficult either.
A forum community dedicated to Ski-doo snowmobile owners and enthusiasts. Come join the discussion about trails, racing, performance, modifications, classifieds, troubleshooting, maintenance, and more!