Floor Pan Help!

I am restoring a 64 dart Convertible, Resto-mod , turns out there isn't much left of the floor pans! Doesn't appear that there is a source for replacement's. I am considering AMD pans for a 67-up or just getting sheet metal and fabing them in! The front seats are not 64's so there positioning will need to be changed anyway! The hump can be saved so most of the needed repairs look pretty flat!

Thoughts please!

image.jpeg More of the same I'm afraid under the carpet in the front!