Quote from CharlesTurnerDifferent for different plants. Seeing one screw on Dearborn and Metuchen and 2 screws on San Jose... and then some here and there either way.
Thanks.
I looked closely at my shock tower to firewall braces. They are original to my car, and there has been a screw only in the front hole. You can tell that there has never been a screw in the hole closest to the firewall. It is a Dearborn - Aug. '64 production car.