Being 52 years old, I cant help but think back to Massey-Fergusen snowmobiles also.
At some point, Scorpion and M/F were in the same company and shared platforms; here is a story that you may find interesting.
https://snowgoer.com/vintage-sleds/flashback-1976-massey-ferguson-whirlwind-snowmobile/
It makes so much sense to me why I was finding/buying these sleds back in the early 80's in Farmer's lofts. They would break down, the Farmer had no time to fix them and just stored them out of the way. I would then hear about them around the way and then buy one and fix 'em back up to ride. I also found Herters, Ariens and Moto-Ski; sure brings back memories.
Bear
You are refreshing many memories fuji, as a good friend/riding bud, and myself used to work on these type "barnfinds" for other people. We eventually quit doing sled repair for other's sleds, as it took away too much of our own riding time!!! F--- that!!! Here's a good one for ya, a good friend of my son, and I, came across a 1991 Peterbuilt 387 "barnfind" earlier this year. And really cheap!!! It had sat since 2005, 800K miles, but turned out to be a darned good, solid truck!!! Cab is tight, no loose rivets, or rattles. It took some work though, stale fuel, contaminated fuel tanks, bad fuel lines, tires, minor repair, and very major cleanup due!!! It was to be as a good "extra" truck. Then, as it would turn out, it was well needed as their newest truck's engine shot craps. Ouch, big $$$ for sure on that one!!! I put more than a few miles on the old "Pete" this fall hauling grain. Maybe they should call it "Picker"??? It's a runner, as in no pollution control crap, 455hp 60 series Detroit has a lot more grunt, and go than the old Cat KW. It's always better to be "lucky" than it is to be "good", eh???