I've seen on youtube that the original radio/cd was replaced and a double din hu (6.5 or 7") was installed instead. first I would like to ask if and where a suitable fascia with the opening for the double din hu can be purchased. my attempt so far were in vane. another question rises and that is how the new hu connects to the vehicle's ecu since as far as I know, the radio and the multi function display are connected to it. the vehicle is 2010 Citroen C5 X7.