much different than mine... BUT it appears to be a DS safety loop.
i was installing my DS loop when i saw it so i don't think it is but i don't know
well the OEM two piece parts under there somewhere.... maybe that's for the front half?
Looks like a over the axle pipe holder to hold it while you put it the h pipe . LOL . Never seen one of those before .

I had one on my car and took it off when I installed the one piece drive shaft.
It was a tunnel support brace that was used on all the 2005 and on early 06 cars.
This is one of the many parts that Ford did away with over the years.
You can follow Fords lead and disregard it.