Quote:

...
8. I would also be curious if others have seen this area cracked before.



I just posted detailed pictures of craking in same area around rear K-member bolt in the post above yours.

I have seen cracking in the front under the front UCA bushing in my 68 Dart convertible that has stock t-bars and stock front sway bar.

I have observed some A-bodies in the junkyard with cracking like this when I first experienced it in 1997. Not all, not a majority, just some.