you could make it work, but the lug patterns will be different, and im sure other things will be different. but not 100% sure.. best just to find a rear end out of a 97-03...
it will fit but the driveshaft the way it attaches to the pinion will be different and maybe the 88 doesnt have a sensor that the 98 needs and the lug patterns will be different 88 uses inches pattern the 98 uses mm
i bet he just destroyed the carrier.. you could swap those..