Duster differences 70-71

my 71 has the no ridge in the trunk but it is an early build i imagine later production date cars had the ridge. i think the ridge on the trunk is there for strength b/c ive seen some lids w/o the ridge and the metal seperates from the internal trunk and leaves a hump.. but ne way yes really the only thing u wud have to change is the grille and cut out the dash to make room for the rally gauges AND the tailights are the same for 70-71

70 Duster had standard front disk brakes and to lock the car you need the key. 71 72 Duster you could push the door lock button to lock the car. 70 had the smooth trunk lid where the 71 72 had the raised center line. 72 bumper jack has the small hook that fits in a slot in the bumpers. 70 71 has the large hook that goes under the bumper.