[aerohead]

Can you describe the driving environment the truck is most likely to see?
In town,nothing is going to help more than synchronized traffic lights and momentum driving.
Ram has the lowest drag of production pickups,but if you're doing a bunch of highway miles drag reduction can help if it doesn't interfere with loading and unloading materials,tools,and equipment.
AeroStealth's 2014 F-150 EcoBoost is returning up to 30-mpg with just a Brett Herndon AeroLid.
He's got a Herndon boat tail which is going to modified for a swing-away mount.
With the tail,his truck is around Cd 0.30,down from Cd 0.403.
Spirit of Ecomodder.com measured Cd 0.268 in the tunnel,down from Cd 0.44.