[sYc]

Brain, I have been told by a reliable sourse that the PBT was the last thing Fisher Body did before the body (firewall back) was released to the Chevrolet side of the plant. There were two inspectors at the end of the line who check the P-paint, B-body(sheetmetal) and T-trim. So, the markings would be on top of any paint.

On a side note, the firewall crayon markings will be under the firewall paint.