How are you at butt welding? If the rest of your inner fender skirts are OK, You can use the AMD pieces for patch panels, and it will take a lot less time. Done carefully, it is not noticeable.
That's what I started with, but it looks like just putting the new panels on would be a better end result. They cut into the flange on the firewall also so that need patched etc.. Have you suffered through this also? Thanks for asking!