Quick Question: Door Hinge support

[am0254338]

This question is referring to 47-54 trucks. I need the hinge support that is spot welded on the back of the front cab pillar. It's the piece of sheet metal behind every hinge. This is also the piece the threaded "nuts" are attached to. I did some searching but don't even know what to call it. I am wondering if these are available aftermarket anywhere? I could make one but would like to find one if possible. Any help is greatly appreciated. Thanks