I have a 2008 Pontiac G8 GT with the premium Blaupunkt stereo. I cannot remove this due to the HVAC controls being built in. I just bought the 500bt nav unit and the ND-G500 amplifier so I can hear the nav and Bluetooth through my car stereo speakers...its a PNP system. I also have three other Zapco amps to run my car stereo, along with an Audiocontrol DQL-8 OEM integration unit, which utilizes high level speaker inputs. Will I be able to utilize the ND-G500 and the Audio Control Unit at the same time? I know the G500 utilizes the high level speaker inputs, but im not sure if I can then run them again to the Audiocontrol unit. Finding the answer has been quite frustrating...if you have car stereo install experience...please chime in!!! thanks