Does anybody make the patch panel I need for a '55-'56 4 door?

[Lamar Wadsworth]

This is the only major rust on a '55 Ford that my parents bought new. I fixed my lower front fenders where they meet the cowl with patch panels. Does anybody make a patch panel to fix the driver's side dogleg on a 4 door or is my only option to cut a solid section out of a donor car? Most of the parts cars I can find have more rust than the one I'm working on. I really don't want to do screen wire and bondo. My '55 is mostly very solid, perfect floors and trunk floor. I need the back 6" or so of the rocker panel and the dogleg over the rear wheel opening.