Are you looking for the door hinge repair panel as shown in our catalog?
http://www.mar-k.com/various_restoration_items.pdf This patch panel is made to replace the lower door hinge panel. It does not include the pocket area behind the face panel. Installation requires cutting and welding, but as patch panels go, it is not too dificult and it fits correctly. Instructions are not on-line but are included with the parts.
Mar-Ktech