If you want mpg stay away from 4.10! 3.73 is what most diesels run because of torque produced from the diesel engine. I have owned several trucks with varius engine displacements in 4.10 and 4.11 you will not see more then 13mpg average and less towing depending on load.
Edited by Larry M (11/16/17 12:16 AM)
Better to chase some Dreams then to Die wondering!