Quick door interchange question

The mounting for the arm rest is different and the mirror location are the biggest things that I have ran in to.

Here is some additional information I found on the site using the search engine.

68's have the one year only fresh air vent on the bottom inside toward the rear. 67's have the driver's side mirror closer to the vent window so it can't open all the way. 67 has a one year only vent window. the screw hole in the top door panel holds it in place and it uses a special frame.