Thanks Pab567 for your response and for your suggestion of retrofitting an Amundsen MIB STD2 PQ. I had watched your youtube video of this and your previous posts to the forum on this. The unit does look good but addressing all the issues and recoding, adding gateways etc to ensure that it works fully in the installation process seems complex, and certainly too complex for my limited technical abilities. While there are some audio specialists who I have spoken with and who could potentialy help, they are not certain of what is required and whether the system will fully work without having the car and the unit. This, I guess is the issue. I don't want to buy a unit and then find that I can't get it properly installed! It was for this reason that a 'like for like' replacement is more appealing (notwithstanding the cost of these Kenwood units).
You mention that you were not happy with your Kenwood unit. I have read that the screen resolution is poor and difficult to read in some light conditions but with the exception of installing the digital aerial, everything else seems okay - full functionality, including electric seats, climate system etc seems to provided in the same way as with the Columbus system. I have also not seen any report of it not working with the MFD dashboard system. Can you tell me why you were not happy with yur Kenwood system.
Again, any insights greatly appreciated.
Regards,
John