Would a 1984 Cadillac Fleetwood body parts fit on 1989 Cadillac d'Elegance?

it depents on what parts you want to interchange and on what model you have and if both are sedans or not. but I'll give you only poor hope, as the 1985 (there was no 1984 as far as I know) and the 1995 differ in height, lengtht and widtht and even the wheelbase differs