I have an International with a sleeper and have put two bench seats facing each other back there. The bench seat backs are removable and fit in the middle of the bottom part of the seat to form a bed.
I have two kids (10 and 12) and with a game boy for each, they never even notice they are in a truck. After they get done playing they fall asleep. The wife sits back there too along with the dog. Everyone is very comfortable. The only windows are those at the top of the sleeper. Maybe that is why they don't get motion sickness (I think part of it is visual). I could fit 6 good size adults back there if needed. With the front seats, that would be a total of 8 people.
I plan on converting to a motorhome this winter and will leave the sleeper in place since it also serves as a bed. I plan on having a pocket door to close off the cab/sleeper from the motorhome since I usually have a few people with me.
Mike
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