Those engines were also used to power illuminated highway construction signs. I believe it was Chrysler-Marine. We had a butt-load of sno-runners in the 80-90's. They were a blast, for such a goofy vehicle. When Chrysler was going broke, they gave them to employees, instead of bonuses. They were everywhere around Detroit...in garages. Lots of NOS ones. The ones with the single-hole muffler, were quicker than the salt shaker looking mufflers.