Thank you. I just looked this up. The hoe has 7/8 lower pins and 3/4 top link pins, and "according to a chart" that makes it a "class 1" hitch, for all that's worth, LOL
Yeah, it's all so confusing because stuff gets advertised as whatever but doesn't always match.
My hitch is considered class 1, but is 3/4 on all three pins.
I've bent the 3/4" plate that the pins are attached to on my box blade when I rammed a snow berm in reverse and it didn't move. I had my top link fully extended to 3 turns engaged to get the back of the box blade to bite in reverse. No issue with the top link.
I bent the **** out of a subsoiler, both the cross arms and the blade, when pulling stumps on a steep hill. Same thing.
So I've overloaded it in both directions and lived to tell the tale.
With your subframe, you should be good. I'd be more worried about the gap at the trans from the previous mod cracking the trans or engine block, but only if you get into moving boulders or digging out black locust stumps or something crazy.