Summit racing did offer a vinyl floor kit for a while for 1st gen tundra owners but not any more. It was $205. I callled summit racing about 7 months ago about this carpet and asked him if this would fit the access cab models or just regular cab. He told me that it would fit access cab models and that minor trimming would be needed. Here is the link.
Nifty Products 944801 - Nifty Products Pro-Line Molded Vinyl Flooring Kits - summitracing.com
Nifty products are made by Lund.