My first car was a ‘53 Dodge with a rust hole in the floor big enough to drop a baseball through. It cost at the time, 1960, $350.
“...with a rust hole in the floor big enough to drop a baseball through....”
That’s why they make pop rivets and sheet metal shears so one can round up some galvanized sheet metal and fix that sort of thing for a few years. [some sealant required]
Bin there, done that.