There's only two companies I know of (could be more) that are designing and stamping sheet metal parts out. Mill Supply and Sherman Parts. Not sure if YearOne stamps their own or not.
Every other place you see on the Internet who have them are probably getting the parts from there. Floor pans especially your not fabricating something like that by hand.
Which reminds me, which side of the car do you need floor pans for?
I have a brand new (still in the box) Passenger Side I need to sell for Brian (GBody Parts) that I'm not going to use.
I also have a new Drivers Side that I can let go for like half price cause I coated it with POR-15 already and cut a bit off the top where the toe board is. After doing all that I decided to get one from a donor car.
Let me know.
Greg