I used Ozite carpet on my 64, and made it in one piece front to back. Lots of stretching. The only place where I had to piece in was just at the rear of the side door openings where a couple of 90 degree angles meet. Couldn't stretch it that much. I spray glued it all down on top of foil backed insulation, and used a carpet bar at the back from Menard's. You can cut the carpet with good scissors. The place I bought it was yourautotrim.com or something like that.
Can you post a pic of your interior? This sounds very interesting.
The only thing I'd be concerned about is removing it for some reason... a leak causes mildew, a heater core goes out, you want to run new wires, etc.
-Brad
