https://ebay.us/3iObGt$99 + free shipping
From the 80/89 parts catalog, this part seems to belong to:
81/83 E100/250
81/85 F100/250
81/ U150
1984 Bronco 351 Holley Sniper EFI, 3 Speed Ford Auto.
1986 Bronco 302 EFI, AOD, Eddie Bauer, with 3G alternator.