[plasticuser]

I have decided the method and materials I'll use to build and attach my under body tray.

I will use tape and expanding foam to make a template/mould, then make a set of fiberglass panels that will be installed from the rear to the front, overlapping. This will make for the most lightweight and easy to install/remove system, at moderate cost/effort.

I know how to work around the exhaust, and am comfortable with that side.

I also plan to leave toom for suspension travel causing the driveshaft to move lower when the suspension unloads into a dip.

Where I am unsure is the differential. Will enclosing it or putting it out of airflow cause it to get significantly hotter? What is a normal temperature for an F150 differential after some freeway driving?

I will use my infrared thermometer to collect trip temperature data after longer drives for the next few weeks and report back, but any insight would be helpful.