The 460 came in 4x4 trucks from about 1981 tru 1997. I would recomend an f350 from 92-97, a little stiffer ride than the f250 due to the monobeam dana 60 up front but if your looking to modify latter for mudding or pulling it will be your best bet. If your buying a truck from the northern salt states look carefully for rust ie core supports and rear spring shackles and brackets.