THIS site has replacement carpet to fit exactly; they also offer vinyl floors in seven colors. They are priced right; I've done a lot of checking, and I can get a beige (tan) vinyl floor for my crewcab, including padding, delivered to OH, for $168. Can't wait to get rid of that nasty, funky carpet and pad, and install something I can hose down. While you're there, consider doing some soundproofing on the floorpan. I did it last summer on this truck, and did it years ago on my previous PSD. It makes a huge difference. I think I posted about it here or in the 94-97 mods forum sometime late last summer or early fall, with a lengthy description of the mod. Net cost around $50 and a long day - well worth it if you're already pulling seats and carpet.
Josh