[71 Chevy Cheyenne]

I doubt a cab swap as the VIN info appears to never have been on the SPID, see close up attached. Looks like something in the glove box scratched it?? But who knows??
I did inspect the bed and can see where it is yellow under the dark olive so clearly that is a replacement bed.
I did further inspect the fenders, hood, piece behind the hood with wipers in it, and can see where all were originally medium olive (unable to tell on portion between the chrome moldings).
That seems to make since with the medium olive interior.
Does it make since that a code 557 on a 71 would be medium olive?