There is a reason why I put this job off for so many years.
My worst fear about it didn't materialize...pretty happy that I don't have to pull the interior to cut holes in the body to get to the back side of the cage nuts on positions 2-4.
And it looks like most of my frame holes might be okay. Not Great...but okay. If I end up pulling the bumper covers, I'll probably go ahead and fix them right...but if I can get that bolt out without pulling the covers, I'll probably just make them due as is.
Pulling the body might make it much easier to home grow some chassis stiffeners at the same time though.
