Same panel is also junk on the parts truck.
If the parts truck is beyond using, how about cutting the windshield pillars just below this panel, and at the top cut back into the roof a couple inches, and send it to me. I'd rather work from an original part, and one that is rusty would even work as long as it stayed in one piece, hence leaving it attached to surrounding metal. Otherwise, we'd have to rely on someone's truck locally to use as a measurement pattern. (not just dimensions, but also bends, contours, etc.)
*edit*
But it's sounding more like we may find something to work from on this end..