if you had all the panels im sure you could do it but there is one thing i forgot that may pose a problem. the 74 up a bodies no longer used the same bumper supports in the framerails. The framerails for 68-73 cars are the same but the 74-76 cars used that gigantic impact bumper that only bolts up with one bolt in the frame rail so you would haveto do some fabing to get the 70-72 bumpers on.That would look cool with the 70-72 dart front clip on the duster a sort of demon that never was. By the way gtx do you have a 72 dart clip or something i know you had that car a while back do you still have the clip i know a guy looking for one. Justin