72 Dart Vs. 72 Duster Seats

Hello all, I found a nice set of seats that are supposedly out of a 72 Dart that we're looking to put in a 72 Duster.

Can anyone tell me if the 72 Dart rear seats are a direct fit to a 72 Duster? I have been surfing on FABO and can't find a clear answer. I read a couple of threads that said the Dart rear back cushions are maybe taller.

Also, have a look at the image below. Is this a 72 or 73 hinge? Looking at the cover styles it appears to be a 73. It also appears there may be some hardware missing. I'm not real savvy about the details like this on the A Bodies.

Thanks in advance.