Fits 1980-1984 F-U100/350 without the dual battery option.
Found more on Broncos than F-series in my experiences.
That box is in good condition. The most common problem with these was the tab on the front of the lid snaps off. This one is intact.
You do not need the reinforcement panel riveted to the fender to install it. Question: Did the 1980 come with the bracket? E1TZ-10461A10-A is a 1981 part number etc. . .
Not sure it's worth $500 aprox. Used though.
That's more a price for NOS I'd think.
Truck: 1981 F-150 Explorer / Engine: 300-6 California MCU Feedback System / Trans: T-18 - 4 speed / 2.75 Ford Rear Axle Open Diff.