Your other questions have been answered already, so I will address the SC whine. If it still has the stock CAI on it, you will not be able to hear the SC from inside the car. I was a bit concerned when I first bought mine that I could not hear it. Put on a NeedsWings CAI, and it will be much faster, and you will then hear the beautiful sound of the SC. Good luck with the purchase. The SRT is a blast to drive and own.