Somebody told me years ago, that markings on the firewall like that, are the final inspectors mark when it came off the assembly line.
Don't know if it is true or not, but it does make sense.


1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!