What is this plug/gasket called and does anyone have 2?

63 MorePar said

Looks a lot like the push button cable grommet on my 63'. Have my starter lead and my speedo wirers through mine!
Larry

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Wow it sure does. I like the grommet idea better than a plug but can't find the grommet. I'll scour the yards to see if I can find some, while I'm waiting on the body plugs to come in.