[gordon]

I've got a Ford-MH SnoGo myself (rest of forum yawns - fed up hearing about it)

While I was looking for parts for it a year or two back I was searching on the net for snow equipment dealers in the US, and at least one of the dealers had a couple of these things for sale.

I'm sure your best bet is to trawl through all the dealers till you find someone with a unit that is being parted out. I know how difficult it will be, but no other way.

Alternatively you could try to get it down to part numbers, find what other trucks were sold with them, etc, etc, but i'm assuming you have already tried that.