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**dmjlambert** · 11-13-2021, 10:08 PM

I believe 67 and later had a plastic plug like this
https://www.classicindustries.com/pr...ts/152862.html
And 72 and earlier had a metal plate like this
https://www.classicparts.com/1971-72...ctinfo/90-542/
Supposedly the plastic plug would pop out and get lost if you closed the door with windows up, so they switched to metal plate held by screws in some year, perhaps 71.

I got a metal plate for my 1969 truck that surely came with the plastic plug, because there are no screw holes. I plan to install it the next time my engine is out. The later year trucks also got a vent in the door frame to allow for the doors to be shut with windows up without causing them to be hard to close.

Plastic plug
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Name: Screen Shot 2021-11-13 at 8.03.40 PM.jpg
Views: 319
Size: 19.5 KB

Metal plate
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11-13-2021, 10:08 PM	#3
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,948	Re: Mystery Hole I believe 67 and later had a plastic plug like this https://www.classicindustries.com/pr...ts/152862.html And 72 and earlier had a metal plate like this https://www.classicparts.com/1971-72...ctinfo/90-542/ Supposedly the plastic plug would pop out and get lost if you closed the door with windows up, so they switched to metal plate held by screws in some year, perhaps 71. I got a metal plate for my 1969 truck that surely came with the plastic plug, because there are no screw holes. I plan to install it the next time my engine is out. The later year trucks also got a vent in the door frame to allow for the doors to be shut with windows up without causing them to be hard to close. Plastic plug Metal plate