Hey Adam, Welcome to EM (from a local).
If you don't do any off-roading, a belly pan is a great idea. I had a chance to see the new F-150 chassis at the Dearborn (Rouge) assembly plant when production began. It definitely needs an undercarriage treatment for optimal FE, but the customer usage concern was obvious. The most benefit is down low for now -- the wiper area is minimal, but every little bit counts.
Any feedback devices available, like the ScanGauge. It's a good driving coach.
On that note, any plans for lowering the vehicle? That could easily reduce the airflow on the down-low. Otherwise, you have a lot of weight to start and keep going.
Best FE to you...
RH77
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“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein
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