One of the options I've been looking at is a V4 clone with a Livinlite camper (
http://www.livinlite.com/truck-campers.php) on the back. Once the bed side reveals are framed in & sheeted it'd make a great setup... I thought best way to mount would be a custom subframe that quick locks onto the bed and have that bolted to the camper. Once the subframe was made it could be sent to the factory for them to install at the same time as building the side boxes. Would make a long lasting robust rig :drool:
Another option were considering is an ambo conversion, Livinlite aluminium frame / composite cabinets would make an ideal fit out for one. Robust & no wood to rot... Looking at their toy hauler setups, it would be quite easy for them to manufacture and substantially reduce time from start to being out camping in it.