RodDoors Rear Cab Cover For Studebaker Truck are pretrimmed Molded ABS plastic and are ready to cover and Install. If you decide to retain the gas tank within the cab area you will have to trim the Drivers side corner piece to allow for the gas filler tube. This can be done easily with only a 1-3/4" hole saw. This really cleans up the area behind the seat. Included with each kit is a set of cover plates for to cover over the top of the metal strengtheners on each side of the seat at the floor.