I think I understand your question and I assume you are looking for pictures of how it is normally built.
Search in these build threads and you should find your anwser.
http://www.914world.com/bbs2/index.php?showforum=78Basically, the door jamb where the latch is goes down and becomes tangent to the sill plate. The sill plate continues a little under it towards the back of the car but quickly ends. The jamb was brazed to the sill upon factory assembly.
Hope this helps, good luck with your project!