Outfitter switch install
I have a 06 xl and when I installed mine one of the unused plugs in that location was for the factory electronic trailer brake controller which is directly beside the upfitter switch panel. The kit should contain a smaller "cubby" insert to go beside the switches for us who don't have the trailer brake module.
In other words, that whole piece that was originally in the dash (in your pic #1) is no longer used.
This is what you need to add Upfitters to a 2008.
I installed a different kit in my 2007 F250XL with great results.




