I am new to the forums, but I looked at some of the installs under stereo and saw one person saying they installed the system, needing the amp and speakers, but I am looking for a full description of parts needed (cables, etc.) and how it might be installed in a x5 with nav. Not sure if anyone has done this and actually not sure if there is a big difference between non-dsp systems and dsp systems. Any information is greatly appreciated.