Check out the manual, the ad says a listing of tractors it will fit is in the manual. But to answer your question, any plow can be modified to fit just about any tractor. The thing to keep in mind is how much time, money and effort is involved and is it worth while.
Did you do a check on ebay, craigslist or facebook marketplace to see if a 116 plow is available. Might also see which one you need at these sites.
In a word, no - it won't fit. The 116 takes a 42 inch blade and those blades aren't hard to find since the same blade fits a 108, 111, 112L, a 160, 165, 170, 175, 180 and 185 lawn tractors made from the '80s.
Here you will find the compatibility chart for the older 100 series lawn tractors.