With one of those ubiquitous door panel tools and a couple of different size phillips screwdrivers (#1 and #3), and some good fortune. a door panel swap will be quite easy. Remove your steel trim piece off the top of the door, as well as your locking knob. Then remove your door handle, door release lever, and window crank. This is accomplished by removing the "Omega" clips (they get their name from their shape, which is just like US built cars, only smaller) with the spring behind them compressed. It is great to have a helper hold the door panel in while you try to release the clip. I made a tool out of a cheapo hardware store small flat-bladed screwdiver by putting the last 1.5 inches in a vise and bending it about 15 degrees, then grinding the blade down to a sharp triangle on my bench grinder. After a little tweaking, it was fairly easy to engage one side of the clip with the tool, and pop the handle off.
Now, it is just a matter of carefully feeling your way around the perimeter of the door skin, and releasing the clips that hold the door skin on to the door.
A final couple of thoughts:
The clips, door skins, and "Omega" clips are all available through any of the host of vendors that market the stuff GCP makes and sells. If the back masonite board on your car is in tough shape, you can duplicate it with some stuff from the local lumber store or office supply...
2- door panels and the panels used for the 4-doors and wagons are different dimensions..oh, and my personal best distance on how far one of those liitle omega clips can fly is about 14 feet so far. Good luck on your project.