Rpo 603?

[57taskforce]

Can anyone tell me about rpo 603? I've got a 72 Cheyenne that I'm making future plans for. I'm trying to gather up the correct interior parts and want to know what this code entails. It's hugger orange with a white headliner and door panels with black carpet and black dash pad, but the seat is missing. Here's a pic of the spid:
Are these things I've listed likely original? And what about the seat?

Any other comments about the spid are welcome as well!

[SS Tim]

Trim code 603 is a Cheyenne Black vinyl interior.
600 is a base (Custom Black) 601 is the Custom Deluxe and 602 are Black bucket seats.
So black headliner, seat, visors, door panels, column and carpet.
No white!

Outside code 553 is 524 Red Orange (Hugger Orange) with a 521 White roof in the Conventional Two-Tone pattern.

All in all a typicaly equipped 1/2 ton LWB, coil spring Cheyenne.

Pulled up the text on your SPID a bit in the last picture.

[57taskforce]

Thanks so much I like the black better anyway. I thought there was something fishy. Thanks for your time!