That door hinge frame is bit tricky to repair because there is separate frame (which is only spot welded into those upper layers of sheet metal) for the hinge behind three layers of sheet metal and all those layers are propably busted in your car too. My challenger looked about the same. If you are going to repair that try to get that actual door hinge frame welded into the backside metal so it stays put when you rip the busted layers of sheet metal from front of it. The actual frame is from much thicker metal and I would guess that it should be in decent condition. The salty air does very bad things to the pillars, hopefully yours are in decent condition. Mine had totally busted c pillars and a pillars were thin from some points but mainly ok.
Have fun with the body work
and keep us posted for pics!
