Just picked up the latest build of the Astra Sportive which is still the G model. Bleedin' cheapskates have fitted the bottom range vdo cd radio without the Info display hookup or steering controls which has been standard for some years..... I pulled the head unit out to check what wiring is included, and all they've run is the standard ISO connectors for power and speakers. The dash display just returns date and time (but it is the full feature module). My question is this..... Can i get a better CD radio and patch it into the display AND if i were to get the appropriate steering wheel, could I run the controls as before???? Thanks.