Now those Are Good garden tractors. Built way better than anything these days. Back when I was doing garden tractor pulling, these were what everybody that wanted their puller to stand up, used.
I learned to drive, and turn wrenches, on a Cub Cadet 105. About a 1968, I think. Was still running decades later when the house was sold. Solid. Well made. Great tractor.
You should bring them down to the Tractor Engine Show in Portland IN this August. One, it would be cool, and two, you'll probably get multiple offers for several times what you paid for them, if you're so inclined to sell.
Theres are several pages on fookbace that might interest you, i opted out as i dont own one but they seem to know and have every ihcc related thing you could possibly think of.