X3 firewall !!!
 

Where is a firewall on the X3 ? I want to pass wires onboard to install a laser jammer and I cannot find a place with plastic hole so I can remove it and pass them. On my Z4 there were 4 places to pass them. I checked realoem, it shows 2-3 places with holes but they are aluminium and no plastic. Do I have to drill in that places ?