The Chysler interchange manual is less than helpful. Note that the manual helps you identify identical parts across platforms. If there are even small differences across years or bodies, the part in question won't be listed as being interchangable. Also, there isn't a lot of informaiton to help you figure out what the differences are.
Here's a couple of examples:
1) The steering gearboxes in '72 used a different size Pitman arm than the other years, but the rest of the box is the same. In other words, you can bolt in a '73 box and arm no problem, but the book lists the '72 box as not being interchangable with the other year boxes. That is true, but the boxes with the Pitman arms are interchangable.
2) The trunk deck on the '70 Cuda is listed as not being interchangable with the other year decks. I believe that the difference is the use of trim studs on the later decks. The remaining dimensions and fit is identical.
