A 1972 DEERE 110 could have 2 engines, a 10HP Kohler, which used an "automotive-style" battery, for which I posted the official factory "specs", NOT my "suggestion". (I didn't catch the "8 HP" detail on first read.)
You did not mention in your first post that yours had a "garden tractor battery" with "L-shaped posts" as the 8 HP Kohler engine version apparently left the factory with. The part number shown for your version is NLA from John Deere, so the "specs" no longer come up for that version.
The single-cylinder Kohler engines (even with ACR) take a bit of juice to get past compression and crank well, so get a "garden tractor-style battery" with the highest cranking Amps that's readily available to you.
As a point of reference, I have a garden tractor with a 12 HP Kohler and the largest "garden tractor-style" battery stocked locally when I needed one last year was a 420 cranking Amp, and it's none to big for the 12 HP.