[dagnabbitt]

Unfortunately, there is a bit more to it than that: I am in the same boat, I have a beautiful pair of 73 door panels that I assumed I could use in my 81. I guess someone skilled in fabrication can make it work, but someone skilled in fabrication can do pretty much anything. See photos below, there would be a lot of modifying and/or fabrication involved. Seems like it would be easier to find and reskin some OEM 73 doors instead.