Need some help

I am wondering if you can get floor panels or just sections for a 73 Dart Swinger. The floor board in the side under the pedals has a few holes and the passenger side hasnt rusted thru yet but it should be replaced also. I was mostly just wanting to know if I can cut these 2 sections out and weld new ones in?

Just section in what you need.
Autobodyspecialt.com has patch panels.
Dallas