I see this thread is kinda old but I'll give some input. My dad had a slide in camper and the way it was secured was pretty simple. On the front of the bed between the cab and bed were one mount on each side then on the inside of the bed was a stress bar that linked the driver and passanger side mount. For the rear there were some mounts bolted to the rear bumper and that was pretty much it. Turnbuckles were used to secure the camper to the truck.