As I’ve mentioned once or twice, I seem to be a glutton for punishment. With the front doors done the difference between the front and rear doors was obvious.
I actually had all of the trim pieces for the rear doors. They were in the trunk of the car when I bought it. After doing the front doors I knew how all of these pieces fit. And how to do a better job of fitting the arm rest.
Sigh. Fine. Pull the rear door cards off the doors. Dig out the aluminum trim panels and chrome trim. Start the process from the middle.
First, cover the aluminum trim panel with vinyl and then fit it and secure it in place.
Fit the arm rest and start adding bolts and sheet metal screws to hold it in place. The bottom of the arm rest was warped, especially on the driver’s side. Screwing it to the door card flattened it out nicely.

Install the updated door cards back on the car, test everything, and rejoice.

Of course it wasn’t quite as simple as this description might imply… But it did go fairly smoothly and the results were good.