Here is what the front upper shock mount looks like:
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I can't say for sure what this is from but I think it is from a '40 (ish) Ford. Maybe DD will chime in here and clarify this. As to drilling/existing holes, I cannot say for sure. It was there when I bought the car.
The bottom end of the shock simply mounts to the perch pins. The front axle/wishbone is a '39 though.