[Mr70]

The 69-70 Super Sport Chevelles had the magnum 500 wheel,(aka SS wheel),automatically included in the Super Sport package,so it won't show up as a seperate RPO code on the window sticker or buildsheet.
Their buildsheets denoted the SS center cap design though,(be it early bolt on or later push on),and raised letter or striped tires used on the wheels too.
Their window stickers & car shippers merely list,"sport wheels" under the Z25 or Z15 equipment.