While cleaning various fasteners I came upon the motor mount bolts.
I was using the included pic from the Chassis Assembly manual for reference.
The 4 frame to mount bolts (375117-S2) I found were indeed PO and the nuts (377706-S7) were Cadmium.
The 2 larger adapter to insulator through bolts (379699-S2) were also PO as was the washer (376102-S2). The 7/16 nut (376420-S7) however is listed as Cadmium, whereas mine was PO.
The hardware fastener Excel agrees with Cad for the large nut, but this is a SJ car.
What was assembly line?
[edit update pic and change title to "...Mount and Fasteners"