I just installed TBP's one piece carpet kit. I liked the fit.
Pro tip; when cutting any holes, for brackets, seat belts, shifters, etc, a hole punch, old socket, or old phillips head screwdriver, and a propane torch, are your friend.
If there is a hole you need, get an old socket in the hole size you need, put it on a long extension, and heat it with the torch. Poke it through where you need the hole. Voila! No fraying edges, clean hole!
If you don't have any old sockets laying around that you want to torch, a pick, punch, or phillips head screwdriver serves the same purpose when heated.