Tail Gates
You may be limited by what your brother wants since it is his truck. If I were getting for my truck now I would use a tool box. Saw one on the road the other day and it looked real slick. Aluminum diamond plate, lockable, bolted to the bed. and the same width as the opening across the back. Shorter than a tailgate would be closed, so clears the gooseneck nicely, plus lots of " extra secure storage. " Keeps other items in the bed from getting out and as I find out daily extra storage is a good thing. Lots of companies sell these fairly cheaply. R C Oo.