Charlie,
Nice pictures. Looks like you had fun.
I had a plow day at my place many years ago. Plowed with an old Oliver 4x16 trip plow. Pulled it with my 25-45R Oilpull and with my Cat Thirty wide gauge. Although pulling a plow with the Rumely was fun, the Cat was definitely the more comfortable one to be on.
Still got the plow but no longer have either of the tractors I last pulled it with.
Got a Oliver 99 ( 4 cyl gas) that could probably handle the 4x16, but that's the last of the big tractors I have.