I posted this on another forum but hopefully I can get more in depth answers posting it here too. Especially from Thai since he seems to be all knowing about the 4Runner. 
Jmitch said:Alright guys, well I am planning on purchasing the Pioneer Navigation System Combo but I am afraid that the two units will not fit in the head-unit area. I have a 2003 4Runner with the factory head-unit still installed. Has anyone had any experience in installing two decks (is that the word?) in the factory head-unit area? Hopefully that makes sense, I am not sure if I got all the terminology correct since I am still learning :roll: . Below is a photo of the system I want to purchase, if anyone can give me feedback about this issue it would be much appreciated. Thanks
http://www.pioneerelectronics.com/pio/pe/vgn/images/portal/cit_3442/38333NAV-SYS910DVD_big.jpg
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