Strange, same part number format as CI pans on the Cubs.
Wonder what the Case/Ford number is.
I do know some Allis GT's used Kohlers as well for power.
At least I know how to tag it now for on my swap table.
Hey David - that first bracket drawing you asked about is also for the 1x2/3 series, besides the 70/100 that Lew mentioned. It's prior to the Quick Attach latch and works with the early blade subframe that has the short ears.
Somewhere in the archives is my post that talks about me and the first time I actually ordered a pair of them, not knowing really what they looked like. I always wondered if they were also a part for something else because when I got them they were painted IH red and had little black, white and red IH emblem decals on each one.