Just to let you guy's know.....4dr's and 2dr's are the same . You will find that seams, spot welds , layer's of metal , w.b. and all the other little thing's are the same between the two model's. The factory just shortend the front door, ran the door sill down to the rear wheelwell , added a center post and smaller rear door. Just a quick way, for the factory to make a 4dr, without changing to much.
Here's a few crude exsamples as far as how it work's out.
Now Ive seen many different way's of doing this conversion......everyone has there own way of doing thing's .
I will go into great detail in the metal work at a later date , but for now Im trying to finish up on welding in a new trunk pan.....thats were the spit is paying off.