The rear seat of a 57 2 door sedan had some anti squeak stuff from the factory. For example, on the three hooks at the top, they had a little wrap of what looked like old fashioned black friction tape. The factory also used some cardboard pieces on either side of the rear seat bulkhead sheet metal near the wheel wells to help keep the squeaking done to a low roar. I have a picture of what one looks like from when I first took the car apart in 77 when I was 16. Naturally, I threw them out. Any chance anyone has one of the cardboards, in any condition, that I might make a pattern out of,nor knows if anyone reproduces these cardboards?