Here's a copy from a page in an old Chevelle book that the NCOA put out. I believe the page is exactly what Cheverolet printed and sent out when you contact the Hobbie line or whatever it's called.
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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!