'67-69 Valiant hood on '70 duster?
'69-72 are the same hood. (except for options like hood pins, emblems, stripes, and scoops). The '67-8 hood will fit the cowl and fender sides but the front is different due to the shape of the grille and latch support. If you include the grilles, filler, latch support and front bumper, it will work.
Thanks, Mark