You mean like this?
I ordered the tonneau over from amazon - it's this one:
and they might make it for your truck.
The rack is from Xtrusion Overland and mine is 15" tall. The cool thing is the design is modular and you can spec what you want when ordering. Get in touch with the owner, Alan Reyes, to see what it would take to get one done for your truck. It is AWESOME!
XTR1 BedRacks
Being my truck is a Ford Ranger, I don't know for sure if this would work in your truck, but you might be able to figure it out after consulting with Alan.