Hoover has been neglected for too long!
Today was an amazingly nice weather day for December, and I pulled the tarp off of Hoover . . (to remember what it looked like.

) .. then, could not help myself, and decided to make somekind of progress today.
The worst looking area was the passenger rear corner, so that was my goal. I was planning to use 18ga, because that seemed to be the original, but only had a piece of 16ga large enough. . . Wow, what a pain! I am amatuer, so there might have been easier method, but it was tough to make a consistent curve on the corner.
For the 90deg flange I used the trusty 2 angle-irons clamped to workbench with big C-clamps . . that went great . . . it was the corner that was a pain. Using a rubber dead-blow hammer -> I tried forming around a 2.5" dia solid steel slug, and a 3" diameter tubing, but got mixed results. In the end I used some probably unconventional methods, but got reasonably close.
I will make sure radius at bottom and top are correct, (when welding the flanges) plus it will be pulled tight to the spare-tire bracket in middle. This should ensure correct radius, when done.
Some before and after photos: