In that photo, I found out the box is for canbus and the speaker is for your door chimes and similar warning sounds.
Once I took the stock radio out, the install made sense. The only thing I was uncertain about was the antenna. The stock unit has 2 antennas, one for FM and one for XM. One has a yellow end and the other was black. I assumed the black was the correct one. I can pull in a lot of FM channels, however they have a bit of static sometimes.
IMO, the Android unit sounds better than stock. It claims 50W X4, I can believe that for the fronts, but the backs aren't as powerful.
That unit dropped right in, didn't have to reposition the amp or cut anything out. It's a perfect fit and looks great and so far I'm loving it.
As other's have said it came displaying degrees C and Km/H. I was able to change those, they were buried deep in the canbus settings screen. However, that left the gauge shown on the screen in weird increments, like 36.5, 54, 72, etc. But it's not like I'm going to look at that for my speed anyhow.