Stop in for a cup of coffee

Mine is 75. Late 74 thru 76 used the smaller /thinner rubber. As far as I can tell ALL A-bodies used same on back.
Back ones. Ya i have on my dart, but they are screwed too. One is bent.
I dont recall if the duster has,it’s a 75. Its buried in snow right now. If it has them and they are useable you can have em. Summer time.