Psssssst! I think he prefers Grog, lol. I wouldn't think they would have differentiated a different setup between a Dart/Dart sport, and a Duster. Just test all of the vacuum pods before you get the dash put back in. Merry Christmas to you and your family. :)
I know there was no difference between Dodge and Plymouth. Reason I asked was 73 was a changeover year and I wanted to insure the vacuum stuff wasn't carried over from 72 to 73 then reworked in 74.
Planning to test the vacuum setup with a small shop vac.
I hope you and your family have a Merry Christmas as well.