A-body armrest - stripped threads in door’s sheet metal

Dana67Dart said
Why not just cut out 2 rectangles the correct size and location for the clips you bought, (like in the photo of my post with the 67 dart door)

Simple, no welding, permanent, repairable by replacing the clips in the future.

Sounds like a good solution but I’m not sure of the difficulty of getting the location correct. Apparently the clips I bought before removing the door panel were intended for the rectangular hole that you show.