MNoutdoors RIP
Gone But Not Forgotten
Here is a homemade differential that we ran across and it really works not bad for a rig that weighs 20,000 pounds 
This was on a Amphibious machine that is reason for the jack shaft assembly to get it off the water you can run right of the axle on snow machines

This was on a Amphibious machine that is reason for the jack shaft assembly to get it off the water you can run right of the axle on snow machines