I have finally tracked down what will work with the stock NAV enabled receivers for the 2005 Crossfire SRT6.

Becker of North America states that the Becker Silverstone 2660 6-CD changer will function though the existing controls on the Crossfire's NAV enabled receiver.

I have ordered one from a local dealer (Not cheap $535 US dollars) as Chrysler didn't even have a changer listed for the car.

I will update this upon installing the unit with pictures and results.

In the mean time I will be performing the Bass blocker upgrade to the audio system to keep me occupied.