1965 Dodge Dart Charger

Got loose of the bolt holding the resonator to the body. At least the pin from the bolt!

Does anyone know how the bolt should look? I only came up with these two different ones? Any ideas?

The last freeze plug that I need look like this. I need 6 of them. They are 31,9 mm or 1,2559 inch. They can't have any printed stuff.

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