We have been doing Long Bed Conversions on the Dodge Mega Cab for a few years now, and now have the 1st New Bodystyle completed.  The Mega Cab is known for it's roomy cab and spacious rear seats.  But, many have stayed away because it is only offered in a 6ft short bed.  I haul a Polaris Ranger in the bed and pull a 32ft camper behind, and fill the cab with a family of 6 and still have room for luggage behind the rear seat!  The Cummins motor is hard to beat, but then add the longer wheel base, and by far it is the best rig I've ever towed with.  I LOVE this truck!