You probably dont have to worry about the truck itself too much but i would definitly try to keep it in as dry a place as possible.
Some guys I've heard take their engines out and bathe them in after run oil then keep them closed up in a ziplock bag.
I feel that if you just follow the already given suggestions you should be fine. Clean everything, remove all batts, plug your carb and exhaust ports, (dont want bugs in your engine) use plenty of After run oil and keep it as dry as possible.