I agree, Jack, not the same car, at least, not at the same time. I’ve never seen a stiffener (for lack of a better term) on the inside of a gon end.
This pair of photos currently in Ted Culotta's ebay sale are not, I think, the same car.
The exterior view of 84794 shows an apparently freshly shopped composite GS gon. The interior view is of a gon with a tight wood bottom having its wood siding replaced with steel.
A neat picture of the work in progress.