Oh thank you so much! This is exactly what I needed to know.
My truck is a 1975 GMC 3500 with a 454 engine. I've never had a camper on it but have pulled five horses in a trailer coast to coast so I know it is up to the job. I like to say it can pass anything on the road except a gas station! So swing out brackets for the front jacks is extremely important to have ahead of time. Also I will have the truck fitted with the proper frame attached tie downs (specific to my type of truck) ahead of time. And remove the tailgate... I might do that right now. Don't need it anyway.
I read in here somewhere that someone used a stall mat from Tractor Supply in the bed of the truck. Is that a good bet? I know they are thick and strong. I have no bed liner. I do have a fifth wheel hitch to take off.
I'm not worried about plugging in for power except maybe to check that things are in working order.
The truck is very old and needs body work and a paint job to look nice. But I don't care. I'm taking care of all the mechanical things and getting new tires, hoses and belts etc. Its just a good old truck and won't run one bit better after the paint......hopefully I can find an older slide in camper that is sound and doesn't have a leaking roof, that would look the part.
Until I know that I really want to travel this way I don't want to spend a lot of money on a fancy class c motor home or a $25,000 truck camper....I just want a place to sleep and cook and a good roof. A toilet and shower are nice but I don't need them and with out them the camper could be shorter and not hang way over the back. Also don't want one that hangs way over the front...it only needs to sleep one.