I have a 3rd gen GS300 with ML/Nav. I want to integrate my ipod into it and was wondering if the SoundLinQ SLI model for the ipod would still allow the SAT (for Sirius) to work with the whole system. I understand that the SLI model has one auxilary and one ipod connection. I just wanted to make sure that the SAT would still function. Also, would a Lexus dealership install this or should I just take it to a shop or Tweeter/Circuit City? Thank you.