Ever want to seat 10 or 11 people in the truck when you go camping? This guy is selling this stretched dually long bed 4x4 in WA: Here is the listing. Not sure how far offroad you would...
He wants $12k for rustbucket and $10k for camper. I was going to say that set up might be good for long-haul with big family, where driver can catch a nap in the camper, but side seats are very tiring on long drives, so that kills the purpose.