It was installed on mine at the dealers (I didnt want it and didnt end up paying for it). I wouldnt reccomend one, the sound quality is ok, but its a bit wonky and doesnt seem to always link up when I get in the car with my phone. My 3 year old sony in my old XB never had any problems. For the prices they ask, i dont think its up to snuff. I cant speak to any install difficulties, but the mic looks a little hokey to me.
I got the direction (price is about $200). I have to tear down half the dash to do it, I am going to pass. When you start unsnapping plastic pins, that's how rattle starts