Car is a fully specked ZT260SE on a 2004 plate and had the system with the Harman/kardon system. ( Ihave retained the sub woofer amp ). All I can say is that the sound quality was very good. The Rover number is YIB 000260
The SatNav's number is YIC 000140 and I have the original CD and an updated copy from a forum member.
If there are any other numbers , pictures or information that you require I will have a look as they are in my office.