Here is Pierre's collection of Sno-Jets. There's about 75 total. If you look closely at the pictures, you'll notice a few really neat sleds.
This 1969 Sno-Jet has been modified by Pierre's son James. The suspension has been upgraded to the Multi-Flex 75. The engine was also upgraded. It would have originally been a hirth, but now has a single cylinder Yamaha. The sled is still using the original drive line and gearing. So lots of power out of the 69, lifts the skis right up.
Here's the 1969 prior to being modified.