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Discussion Starter #1
Hi everyone,
I’m putting down some sound insulation on my 66 coupe and see a few (looks like factory) holes in the floor. As you can see in the attached. There is
  • one in each front floor pan (about 1 inch...and these have a matching hole in the frame
  • one in the right rear floor pan (About 1/2 inch)
  • one very small one below each side under the rear seat). Any ideas?
 

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The front ones should have a rubber body plug on the floor.
The one in the right rear floor may be for an exhaust part.
I think the two under the rear seat should be where the screw comes through from underneath for the emergency brake cable brackets.
 

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Ive got some holes that I have no idea why a PO drilled into the pan or in other unseen parts of the car.

If I dont have plugs for them, I put a dab of liquid nails on them and a square of plastic. Its going to be 100 years before the liquid nails breaks down and around 500 years for the plastic to decompose.

Not pretty, but it works and is unseen.
 

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For little holes that like, if I didn't weld them shut, I just make a plug of strip caulk and smash it in there.
 
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