Duster Rear Window Louvers

Has anybody trie calling Willpak industries for info they still offer custom ordered louvers for 70-74 challengers and some older road runners and chargers and stranger still omni/colt louvers ? they make for a lot of different cars maybe they got a mopar guy there who knows which windows are close in shape to ours like maybe a craparo or a nova , I would love a set for my fastback barracuda