I was thinking about adding another head unit(mp3 cd player) into my dash, while keeping my factory as is. , i figured the coin tray/poweroutlet was good place to put it in, is this possible? anyone who did this already?

 

A full single DIN is too big for that slot. I've seen half DIN EQ installed there though. I had a good look at the area and it seemed there is no way to fit a full DIN there.