If the pins are 3/8", then the holes might not have been molestered. The hood (bonnet) on my resto project doesn't have the dzus fasteners in, and I just measured the holes with a digital caliper. They came out real close to 7/16" (.437). This is on a post 60,000 car. I went downstairs where I have two pre 60,000 hoods and measured those. One of them came up with 7/16" again, and the other was a little over 1/2', but the hole looked wallyoed out, so I say that 7/16" (.437) is the correct size.
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