Your arrow pointing to the rectangular thing in the middle, is actually the surround for the shifter opening in the console. It is hand formed aluminum with leather covering.
The panels front of the doors, on the sides below the dash, are not plastic (at least in my car!) but are again thin aluminum withe leather covering.
The door top pieces are tin covered with leather so could be made easily.
Door panels can be hand made...
Arm rests are wood I believe..... Check with Johnny Woods....seem to recall that he refinished some......quite nicely!