What kind of snowmobile has a narrow track and only one ski?

Years ago, I had one, like this... It was a Chrysler Snow Runner. It had a real narrow track, and, only one ski. It was not related, to the Chrysler Corporation, of automobiles, though. Itr was a company, all by themselves. Another company, that had a snowmobile, with a single ski, up front, was the Ski-Doo Alpine and the Ski-Doo Elan. Although, these models, had the one ski set up, they did have two tracke, in back. So, that is something different, as well. But, I believe, what you saw, was a Chrysler Snow Runner. Not too many of them, left. They don't make them, anymore. I think, they were made, only, till the 1970's.