1970 GS A body Deluxe wheel covers

[tcraft]

Hello too all I have question
wheels on a 70 GS Abody
on the factory Build Sheet
it says PO1 DLX WHEEL CVR at option list at bottom

then in squares BOX 91 it says SB

Car came with G70X14 2 PLY R/S- UYFR ,TIRES
could anyone help with the codes?
Car now has Buick chrome rallies 14" are they stock?:Do No:
thanks

[staged70]

These are the full wheel covers not ralleys. Somewhere I have 4 NOS full covers for a 1970