Stop in for a cup of coffee

I also have seen them, or something similar, on B Body cars, where the fender meets the cowl, on the back/top corner. I'm talking , unmolested cars...
I am thinking they didn't use the shims on the assembly line, but when you had a car with that was misaligned the inspector would flag it and they sent cars with problems to a body shop at the factory to fix problems because they didn't have time to mess with stuff like that on the assembly line.

So I bet those shims came from the Chrysler body shop in house at the factory which is why so few cars have them in the big picture.