Good morning everyone. I am refreshing my 1966 six-cylinder Mustang. Upon removing the rear window, I found a tiny hole on the left and a tiny hole on the right. Both holes seem to be the same distance from the bottom corner. Is this just a rusted out spot and it’s just a fluke that it happened on both sides or is this something that Ford did for some reason? If this is something that needs to be fixed before the window goes back in, is it just a matter of spot welding a piece of metal or...

Holes under the rear window