Radio installation Fiat Ducato Model 2015

Hello, have Fiat Ducato model 2015 (Miller Toronto) bought without radio (i.e. the two shafts were mounted). Now Blaupunkt New York should be installed, we don’t know how the double-din should be fixed. First, in the middle on both sides is a bridge in the way (laying of the removed storage shafts), moreover, in Fiat documents there is nowhere like the (metal) insertion shaft of Blaupunkt fixed. What do I have to exchange everything so that I install the radio u nd can fix ? Monika