If the red is the door, I'd start by shimming the bottom hinge or rebuilding the hinge itself. If the lower pin is wallowing in a ratted out hinge, no shimming is going to correct it.
the body lines at the rear quarter and the rear part of the door are spot on if I lift the rear of the door to tighten up the gap the rear of the door will be much too high I need to fill the gap somehow, possibly with welding rod?
