As I understand it Dodge is going down the same road as Ford this coming year. They are going to have a 4500-5500-6500 series soon. Some are going to offer Mercedes drivetrains and some with the cummins/Allison. I heard this through extensive research on the comp and thru word of mouth. I hope that this is true, otherwise Ford and GM are having a good time at the top in the ultra heavies. Yes, there should be a cab&chassis set up.