Hi, I am sure this question has been answered before but i can not seem to find a definite answer. I am trying to install a Soundstream SNX771 Double Din 7 inch into my 2006 Chrysler 300c. I have the stock Nav and the 8 speaker Boston Acoustic set up currently. I am wondering what other equipment i will need for installation. I can not seem to find a part number for the dash kit, and I would like to keep my steering wheel controls. I know i will need the PAC C2R-CHY4, but i am not sure if that part is better than the Metra part or the Axxess part. Any help or advice is appreciated!