Here are a set of Dodge Ram side-rail bolt on roll bars that I have installed on my truck:
They are stainless steel. The top has 2 stainless steel plates that off-road lights can be mounted. Assembly and installation time is about 90 minutes. I recommend using 2 people to mount the bars. Also, get 2 flat rubber pieces about 3-4 inches wide and 18 inches long to act as a buffer between the bed rail and the stainless steel plates that get bolted onto the bed.
Hope this helps.