The last mail I got from you was 1/5/2023, so I am not seeing it.
As for vintage correct parts etc . . .
There is a case of Motorcraft Super Premium 10w40 and several Motorcraft FL-1As from the early 80's as well.
Still not sure I'd use them. Actually, I am sure.
Might be of interest in a man cave type setting though.
Truck: 1981 F-150 Explorer / Engine: 300-6 California MCU Feedback System / Trans: T-18 - 4 speed / 2.75 Ford Rear Axle Open Diff.