2011 FX4 EcoBoost Screw. Anyone know what is behind the padding on the back wall? Upgrading my sound system and was hoping to mount 2 amps and a capacitor behind the seat. But it has all kinds of lumps and bumps.
Honestly do not want to tear it down to find out....if anyone else already knows. If I have to, I will....but seems like a lot of unbolting just to see back there.

 

Metal wall. Cab vents. Not a whole lot of space. Here's one thread with some info.
https://www.f150forum.com/f38/sony-p...orscan-442194/

 

My 2013 stx extended cab. No rear opening window.

 

Here is a document with pictures for what is behind nearly everything and how to remove the stuff to get to it (I went full sound deadening on my truck removing all interior except dash).

https://docs.google.com/document/d/1...f=true&sd=true

Here is the complete build log on f150forums
https://www.f150forum.com/f30/jdunk54nls-build-446724/
But this one is more condensed:
https://www.caraudiojunkies.com/show...highlight=f150

Here are some back wall pictures (what electronics you have back there could change what is there):