I see the link you sent, I think that's what I need also.
Problem is how to seal it. The current rails are screwed in and have some kind of a seal behind going along the entire side. If I install the silver rail water is going to pour in without any kind of seal. Right now my bed is completely dry when it rains except the very end cornor by the tailgate.
It also says no hardware is included so I need to hope the existing screws fit the silver rail and there's an extra seal included to prevent water from rushing in directly down the side of the rails. That is assuming the retrax doesn't cover the silver rail completely onto the rambox itself?
Ugh what a pain, I don't want to be taking stuff off the new truck just adding stuff to it