This is a spare from a 70 Z28 RS I am restoring and neither this one or the one on the car has the welded nut on the release. What I found was that the vertical support brace has the welded nut in it on the passenger side that would also support the horn. From what I can find in the assembly manual the support brace also shows the welded nut to bolt on the passenger side of the hood release and horn. Please correct me if I am wrong but I think this is correct.
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