Some progress. Convertible body was braced well first and is now off. The shop gave some feedback that the installation of the floors was very well done.
Also, they acknowledged that the alignment of the door door alignments would require some adjustments, possibly to the body, but that it was entirely doable. However, it was best to do this after frame was back on and body was properly sitting on new body mounts.
With the convertible frame and parts frame next to each other, surgery has begun. Here is with one side of frame already removed. While the other side is not rusted through, it is quite thin so that will be replaced as well. The portions that hold the trans brace will also be replaced, and some lighter work will be done to the front of the X frame.