Door Alignment Problem - 65 Dart Convertible

Thanks for all the good advice. I have a few things I plan to try next.

First, I still have the original doors from the car. I plan to mount those doors to see if they have the same problem as the new doors.

Then I think I will set some blocks under the car and lower the rotisserie jacks until some of the weight is on the blocks. I think this will affect the height of the back of the door and the width of the gaps. The question is whether it will affect the in-out alignment of the door. I'm betting it won't but it's worth a try.

Finally, I plan to visit two other cars tomorrow to measure the width between the top of the rear quarters just behind the doors across the interior. If the other cars are narrower than mine, it would explain my problem.

If the width between the quarters match my car, then I think I will go after the doors with a 2x4.

It would be nice to block sand the car sitting on the suspension with the weight of the engine and transmission as described by monook, but I just don't think I have the energy for that.