Holy crap, those pictures are amazing. Thank you so much!
I was able to rig mine to work. I may make a version of that longer rod.
I had this kit from Inline Tube for another truck -
https://www.inlinetube.com/products/inl14355
The shorter brackets are probably the same as what you have.
But the long rod is just straight and not a hook. On a 1/2ton 2wd there is a dimple on the frame it rests on. I just put a bigger washer on it so it wouldn't pull through the hole on my frame. If I can't make a hooked rod, I may make a more elegant plate with an angled surface for the washer on the rod to rest against.
The intermediate cable that was included with the cables from Inline Tube was too short, but the NOS cable 3894291 worked fine.