[Superfuelgero]

Wow, that's one tall order. Can't do much worse though.

There's no point in helping the upward flow, so directing of to the side is the only real option.
Suggestions:
-Air dam
-Stronger rear springs (prevent air build up and safety), or level front
-"Vee" air deflection at front of camper, cab to camper gap, door to camper transition, and bed portion of running boards.
-A bug guard may not be a bad thing here.
-Under tray
-Remove mud flaps including forward part of running boards.
-Remove sunvisor
-Smaller mirror heads
Trailer
-Smooth wheel covers
-fender transitions (fore/aft)
-V-nose the front
-Flat bottom
-Adjust brakes loose


Engine, diesel correct?(going off of bumper openings)
-Cold air intake
-Chip if powerstroke
-Exhaust

So much more possible....

Whats the top of the camper look like?