The lower door panels for both doors were cracked. While they are certainly savable, they would be quite expensive to have remolded and the carboard backer is not in great shape on either panel. I managed to find a pair of really nice panels from a '78 coupe that had virtually no water damage and the vinyl was in great condition. They would just need to be dyed the correct color.
After stripping off the old carpet and cleaning them with lacquer thinner, I dyed them to match the rear panels.
The upper door panels on the '73 and '74 cars have a big strap that is the door pull. The strap always breaks at the front connection to the upper panel and flops around. I have had a different '74 Caddy before and I always hated the strap door pulls. The '75-'78 Eldorados had a different style of upper door panel and the lower door panels that I bought also included the upper panels. Here is the '74 panel:
And here is the '75-'78 panel:
I pulled the old upholstery off of the panel and upholstered it to match the rear upper panel.
Jumping back in time a bit, I had previously mentioned that there was accident damage that had been repaired a very long time ago on the passenger side. It appears that the car had side swiped something and the rear quarter, fender skirt and the passenger side door skin had been replaced. The door itself though should have just been replaced though. The frame of the door shell was crushed and beat back into shape and then a new skin was put on but the shape was not right and no adjusting in the world was going to make it actually fit and line up with the fender and rear quarter. I decided to just toss the door shell and replace it. My donor door was from a '73 and was aqua blue metallic which had been painted white with either a brush or a roller. I had to strip the entire door shell.
I then POR-15ed the seams and primed the whole door.
After that, I gave it a quick paint job with a single stage acrylic enamel. Right now, I'm just painting parts with a single stage paint so it's not in primer. Later on, I'll paint the entire car with a base coat/clear coat all at once.