Bring 2, 5/4 by 6 boards, and 2, 2 by 6 boards. I would worry about the tires rolling off those levelers.
Model X19H Expandable
GMC Sierra Pick up
Been a camper since I was a kid, and that was a long time ago :)
From pup tents with no floors, to tents with floors and flies, to a pop up, to the expandable.