Help!

A lot depends if you can weld and bend and cut metal.
While partial and full floors are available (most of the time) through AMD, the level of correctness is the other factor.

What I have done in the past is to grind away the rotted metal until good metal is found at the same thickness as or as close to what it was new. Find the same thickness metal at the local hardware store or metal shop wholesale place and proceed to make templates.

Cut the metal to size and shape close enough to butted it in and grind the weld down smooth.

The hardest part (for me!) is the curved section n the corner of the floor. I have t figured that one out yet as that’s my next issue to contend with. The replacement metal problem I have is the car is a ‘79 Dodge. No one makes metal for it.