6 in the cab?
You can only get 2 in the front of any mog in comfort. The tranny and its many sticks sits between the front seats so there is no chance of a bench seat. Some sqaure cab mogs have double passenger seat but is not really big enough for 2 adults you may be able to squeeze an adult and a child but not if the child needs a car seat.
4 in the back is also really tight, 3 is more doable if you use the double front seat. This puts you in a square cab doka which at the moment are going to be $50k+ easily. Another options would be an 1300L37 fire truck, these have a much bigger can with two back seats in a club seating configuration. Even though these have a long wheelbase the bed is no bigger because of the monster sized cab. If you can find one of these trucks they are going to be a small fortune.
For 6 you best bet is to make a camper back with a pass through and sit them all on a couch in the back.
Rob
You don't inherit the world from your parents, you borrow it from your children.
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1979 Unimog 416 Expedition Camper
1974 Unimog 421
2004 Dodge Ram 2500, 4x4, Double Cab, Cummins Turbo Diesel
2006 25' Airstream International CCD
2009 Harley Davidson
Sugarloaf, Boulder, CO