Ford fuel systems of that vintage would have the pump in the fuel tank, and if JD bought the engine ( trans?) from Ford they may have got the fuel tank too.
If the engine runs you could get under the tank and listen for the pump humming.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.