[DanRealtor]

I have a 2006 300C SRT-8 with the Rear DVD and the Front 6 disk changer and the Sat Nav (and everything else including kicker). The rear DVD system runs about $1195 USD (installed). The auxillary jacks work fine even with the sat nav. The front nav screen, in its stock configuration, allows you to choose the VES (Vehicle entertainment system, aka Rear DVD) as one of the choices as an input to listen from the factory audio system. In other words, available inputs up front are: AM, FM, Sirius, CD (or MP3), VES.

Also it is possible to run the signal from the rear DVD to the front Nav screen and watch movies up front (I Do!) The FFWD & RWND buttons on my front Nav unit actually work for scene selecting on the rear DVD unit!