That is what my car is. dec 1967 European 911L Targa.
I had guessed that the floors were 3mm tarmat. That is what i presumed you have found.
I there any chance that you may have some detailed pictures of the floor tarmat.
Bye the way my first Porsche was a 1954 coupe.
I am currently trying to find the material.
I am trying to build the car as it was originally built
thank you for the reply