[FirstOwner69]

The carpet to cover the in-cab tank is not included. Rock Auto has it listed separately. Originally, GM only used carpet over the tanks on bucket seat equipped trucks, and it was molded to the contours of the tank. The rear edge of the floor carpet for use with the in-cab tank is bound, so, I assume the carpet that would go to the back wall would be also. You could cut it and use it without binding at that edge if you choose to. In fact, that's what GM did in my original bucket seat truck which never even had carpet under the seats.

A video I saw, I think on ACC's website, shows a pretty neat way to put holes in the carpet for seat bracket attachment, seat belts, etc. It suggests using a hole saw IN REVERSE. I did that with my mass backed carpet which required about 25 holes it total for seats, console, belts, etc. I used an ice pick from underneath to mark the locations and either a 3/4" or 1" hole saw.