as you said mate take off the bottom black part where the grab handles are then you will see how it comes off its attached behind the bottom piece so need to take that off first
yes take out the 2 screwsand pull it off it can be quite hard to remove and iv never taken the part off your asking about but would of thought its the same clips as the bottom part
Remove the bottom. And pull the top off! Needs a tad bits bruit forse!
whatever you do dont snap the metal clips, theyre a pain in the arse coz it'll drop into the tailgate and you'll never see them but always hear them, got mine out with a mganet and now theres a squeeking noise due to the lack of a clip holding everything secure