Hello all, This is my first thread and post to PriusChat. Lets hope it helps. I have a 2008 Prius 4 (i believe) could be a 3, that doesn't really matter. It has the factory JBL 9 speaker w/C CD changer and navigation and bluetooth. I want to Install pioneers new AVH-8400BH multimedia double din system in place of the stock JBL CD changer. I have installed many of radios and sound systems into a variety of cars, but never, to what seems a bit complicated, prius. I guess I've only worked on simple American made vehicles that were not a problem (pop out the stock radio, crimp some wired together and bam, the new aftermarket is in). I'd rather not go to an installer when I'm pretty sure I could install it as long as i know what i need. So what I would love someone to tell me and possibly explain to me and if you're feeling a little crazy show me where to get the parts I would need to install this pioneer product into my Prius. i need to know: 1. What wire harnesses do I need (including steering wheel control, Parking break bypass)? 2. Will i be able to use the aftermarket Bluetooth instead of the stock radio (but still use the microphone the stock Bluetooth uses) ? Is there specific steps i need to take in order to make this happen? 3. Will the air conditioning and the navigation along with the other displays still work properly once I have the Pioneer installed? or do i need to do something to make sure everything else still works? 4. What double din installation kit is the best for this vehicle/item? Thank you all in advance, hopefully you can help me with this!