Another quick question. I believe the drivers door on my car is the original cause the inside color matches the original color of the body. Here is the issue, the trailing edge of the door hits the body when closed. I'm wondering since the rockers are rotted out and the floor is as well up by the footwell, could the body have sagged causing the door to pinch at the rear? Or did the doors fit poorly to begin with? I tried adjusting the gaps but wasn't successful. The passenger door is fine and has a decent gap all the way around. Not perfect, but decent. There also isn't as much rot on that side of the car.
If indeed the car has sagged do to the rot, I will have to measure out the body and weld in braces sooner than I thought. And is there any good reference points to take the measurements from?