Dented k frame

The 4 mounting corners of the K wouldn't show a bend until the K is unbolted and stress relieves. When you go to bolt it back in, one or more corners might have bolt holes misaligned.
The later model K that is cut away for a stabilizer bar through it has to be a bit weaker I think.
Your early closed K is solid as a rock. Its trouble spot is where the nuts for steering gear are welded. If those nuts break loose you have to cut access holes in the K to repair it.