Question on side molding '70 Duster 340

My 1970 Duster was stripe delete but had no side molding on it when my brother got it in 1975. From what I've read, side and rear stripes were standard on the Duster 340 in 1970. The side stripe delete was an option that came with the molding instead.
Sorry I don't know of where to get new molding. Maybe somebody can help you out.