for my 52 I made a 1 piece floor out of rubber roll matting like you get at the building supplies places. The stuff I got was diamond plate, but I installed it smooth side up. The diamond plate does print through a bit. To join sections I scraped the diamonds off, roughed up both surfaces and used contact cement. 3 years in the seams have worked out perfectly, the mat has held up well.
I wanted a floor I could use like a truck, I don't worry about wet, muddy or sandy boots. I sweep it out sometimes and wipe it down with a sponge if it starts looking too grungy. It'll never be in a magazine.
If I did it again I would not go one piece for entire cab, but leave a loose overlap seam just in front of seats. My truck lives outside and I did have to chase down a couple leaks, water that runs down goes behind the mat and pools on top of the insulation, It'd be easier to dry if I could flip the footwell area towards center. I have the same issue with my low trim level sonoma's 1 piece factory mat