Hope you find a buildsheet that is legible.
I found one in my 70 convertible built in Van Nuys, and it was filthy, but after cleaning we were able to read most everything on it.
VIN covered
__________________
Rick
69 Chevelle SS396 Silver L78 M21 Post Sedan (Berger Chev.)
69 Chevelle SS396 Black L78 4-speed 4.10 Post Sedan
Don't text and drive.
Somebody's life may depend on it!