Here are some pictures of my rebuild.
I used a passenger side seat from a good donor car, and dismantled both.
I then rebuilt the drivers seat with the "new" cushions from the donor.
The only difference in the seats were the hinges. They are handed because of the recliner knob. I simply used my original hardware and threw the others away.
The vinyl covers come off easily with your hands. They are not held on by hog rings, or anything else. They simply slip into channels. Just compress the springs and slip them off. Once you do it, you will understand...