A stock floor body drop is done by removing the whole body of the truck from the chassis. Once this is done the original centre section of chassis where the cab would normally mount is cut out and replaced with a new section of chassis. The new section of chassis is lower in height than the original and will allow the body drop to take place without having to cut the floor from the cab. This will mean you can avoid loosing any head or leg room inside the cab. It also means you can maintain things like your original pedal box, heater and air con with relative ease.