Hello all. I have the 8-speaker Sound Group II option in my 05 300c and I'm fairly sure at least 2 of the speakers are blown. I want to upgrade to the best setup possible using the stock amp so I don't have to do any new wiring. I need some help choosing components. I figure I will skip the center 3.5 dash speaker since it isn't necessary. Also, if there is a thread with speaker installation directions that someone can link me to that would be much appreciated. I look forward to hearing some of your suggestions. Thanks.