Here is the pic of the [2] holes on my truck. Note that they are on the vertical piece, not up under the lip by the glass. Maybe it was meant to be more like polarbeard's?

I also have no clue why another piece of metal was welded to the left of the holes, and, something must have once been mounted where the driver sun visor belongs.
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1957 Chevy Panel Truck, powered by SBC 350 from 1977 Camaro
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