Mike, I had a hard time finding any reference to them at all till I found a forum where they referred to the decal by the NSM name and then it was much easier. GM was 985, Ford was 977 and Chrysler was 972. I'm not sure what date they began using the decal though.
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'72 Formula 455HO TH400, Revere Silver, black deluxe
'74 Trans Am SD 4 speed, Admiralty Blue, blue deluxe
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