'65 Barracuda Interior moldings under rear window

Bob - I now am confused on this fresh air ventilation in my car. The "slots" I incorrectly referred to above is only one slot on the pass side metal trim. I now believe that slot was for the optional rear window defogger. In the absence of that defogger, I am not clear whether it provides an adequate ventilation path or not. It clearly vents to inside the trunk so assuming air can find its way out of the trunk, it is a vent. I retrieved my plastic plugs just to make sure my memory is correct in that they are solid plugs. They indeed are.

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