Heater box grommets and hardware

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I am in the process of rebuilding my box and have found suitable foam. I am trying to save money and saw an old post where a gentleman named Promano by username was selling individual parts. I tried to message him but received notice he is not taking messages. Is anyone selling individual parts or can anyone provide a compressive list of the washer sizes and all grommets (including for wiring, heater core inlet and outlet and Bowden cables) so I may purchase them individually elsewhere? I have read many old posts but only saw exact sizing for one type of the required grommets ( 3/16" ID,  7/16 OD, 5/16 Hole ) which seems consistent with a number of posts. Thank you very, very much.

Best Wishes,


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