With old cars, all kinds of half-ass repairs have occurred over the years. Here are just a couple of photos of a patch repair that was needed after some fool welded the center nose panel to the fenders. I guess it was easier to 'touch em' with a Mig than find a bolt and a wrench. Naturally, the Mig burned threw the fender and then this clown filled the hole with Bondo.

Anyway, sheet metal work is a learned art and not one that I have accomplished but I'm good enough to cut out the rust and weld a small tab onto the corner of the fender.   It will still require some filler but at least now the bubbling rust problems are gone and the fender/nose panel attaches correctly.