Have my XLR in Europe, the factory nav-system does not work as Europe have a totally different system. Obviously I will need to change the hardware. Also we use DAB+ radio here, there are many different aftermarket radios with both DAB and EU-navigation. The problem is that nobody can advise what to buy to get this working here in EU, and to fit car. The onstar is a no-issue since it's not in use in EU. Any suggestions from anybody? GM in Europe is a non-helper.