Hood Fix?

Substantial captive nut but they blew it on the material between the two.

The trunk captive nut is actually removable and fits inside the hinge tube.

It is part of a u shaped channel.

After looking at your piece and taking a tiny borascope to the only hole in the hood near the hinge on my 67 dart. This is what I think it looks like inside now.

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You might be able to remove only the spot welds on the top side and fanagle a replacement welded nut piece into the keeper then re spot weld the keeper.

I know at some point they changed the adjustment from slots on the hood to slots on the hinge or visa versa.