I am a new boxster owner ( 2008 Boxster S ) and am contemplating putting in a retrofit PCM (just has the regular CD/radio now). Has anyone had success with adding the PCM 2.1? Any problems? Is it a good unit? And now that the 3.0 is out in the 2009's does anyone know if that one will work in the 2008?...it doesn't appear to be available yet as a retrofit kit. Answers and thoughts most welcome!!! Thanks!