I'm digging this truck pretty hard as I am about to begin a build with almost that exact purpose; a base camp and tow rig for hauling my crawler around. I'll be starting with a 92 F350 CCLB with a 7.3idi, soon to be turbo'd. I think it has that EXACT same topper on it. It's a sort of heirloom truck from a family friend, I ask the following questions because I have yet to go pick it up from its current owner to answer them myself
Is your plan to construct your sleep platform so that you sleep accross the width of the truck instead of along the length? How tall are you and will this be enough room? I like the idea as it would create a ton of space under the cap for activities, but at 6'3" it may not be doable. Keep the pics coming!!