Can i use 75 duster seats in a 75 dart sport

So im looking at a new front and rear bench seat for my 75 dart sport. I know that the duster was practically the same car so does that mean that the bench seats from the duster will fit in my dart sport? The new rear seat im getting has the fold down capability which my car currently doesnt have could i convert to the fold down rear seat?
Thanks for any help in advanced dom