No, Not at all..when they built a 340 Duster tail panel stripe was always there...If you wanted V5X the stripe was deleted and the fender emblems included...the emblems were the identifier at that point, not the large 340 decals..
UPDATE: I recently discovered buyers in 72 could in fact delete ALL stripes if so desired....V68 delete longitudinal and V88 delete transverse or rear stripes. Of course V5X (body side moldings) were optional.