Question on side molding '70 Duster 340

Have a look here. Those moldings were optional and part of a package.
http://www.hamtramck-historical.com...ershipDataBook/1970/70_Valiant_Duster0009.jpg

http://www.hamtramck-historical.com...ershipDataBook/1970/70_Valiant_Duster0007.jpg