Just a quick question really - is this possible?
I have been on the Kufatec website and spotted this;
KUFATEC GmbH & Co. KG - RNS-E Bundle RNS-E Adapter + antenna adapter + Unlock key 34521
Would that do the job? - The car currently has a Symphony II (non bose).
If I upgraded to the RNS E - would the standard rear subwoofer still work?