1958-1960 D100-D300 (rear fender bracket changed mid 1959).
1958 W100/W200/TW use a specific fender without the extended flap.
1958-1960 W300, and 1959-1960 W100/W200/TW use the extended flap, which is common to the medium duty trucks.
1959-1960 W100-W200 rear flaps look slightly trimmed compared to the D500. Rear brackets changed mid 1959.
1958-1960 W300 and 1958-1960 D400, D500, D600 (low tonage front axle only) rear brackets changed mid 1959.
1958-1960 W500 and D600 (high tonage only), D700, D800, D900.
1961-1966 D100 and W100 Town Wagon and Town Panel.