Duster Rear Window Louvers

i really like this style for side windows having four openings or "slats" if you will. as far as the rear window goes, it wouldnt matter to me if they were metal or plastic. i am pretty sure the RR side louvers are fiberglass, but ive never had one in my hands. the louvers in your link are exactly what i would want for the rear , but man the prices on any set i have seen are just too rich for my wallet. a few pages back are examples of the abs plastics. i put that picture here for reference in case the link disappears