A Sawzall can also be used for cutting the floor. The Sawzall is nice, because in the hands of a professional, it will make nice, straight, exact cuts. In this photo, the floor is being cut along the sides. The cut will run from the firewall all the way back to the rear cab wall on both sides of the truck. Next, the back wall will be cut horizontally, connecting both cuts that were made along the floor. The firewall will also be cut horizontally. When all the cuts have been made, the floor will be loose from the cab and can be raised and reattached.