the bed rail houses a square tubing frame under it that ties straight to the cab wall frame (hidden). It's uprights run inside the stakepockets and tie it to the bottoms. So basically, its a square tube frame for the be walls, anchored at the bottoms and at the top into the cab wall.
I didnt want it to be seamless so I still have a gap at the stake pockets,and the front bed wall.
Although there isnt any need for there to be other than looks..
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