Engine Submerged Fixed

couple weeks ago my neigbor sunk his 98 ford ranger the whole engine compartment was under water and about half of his cab. so after changing the oil filter, the air filter, cycling new oil through, and buying a new brain (ecu) its finally running again. yes it sounds kinda rough, because the barrings in the alternator are shot. that and the 4wheel drive dosnt work, we checked fuses. but we couldnt find anything .:banghead: if anybody knows of anything to do help would be GREAT! thanks