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
