Full quarter panels
Wow! I guess this kind of thing is pretty common back east. I learned a lot from just looking at these pictures. My left rear quarter had been patched the same way. Rivets and bondo, no welds. A rear sub frame section had been stick welded on and was pretty ugly. Thanks for posting the pictures. Very informative. I welded in the right front floor pan very much like you did. Makes me feel better about what I did. First (and last!) time I’ve done it.