If you look under the hotrod blowout nz post you will see a photo of my 52 dodge coronet Kustom with a homemade carson top,this car was a 4door sedan.
sectioning your car is the grand daddy of all custom jobs... "Sectioning is the act of removing a horizontal section from the body of a car, lowering the top half onto the bottom half and welding the result back together. The purpose is to reduce the overall height of the bodywork of the car. Like a roof chop." thank Wikipedia
i'm not sure that I quite get your quesstion. I measured from the center of the door to the top of the window opening and it is about 12 inches. hope this helps. also we 4 inches total out.