Stereo installed tomoz - anything to tell firm?

[Mark-UK]

Im getting the after market kenwood double din installed tommorow by a local company, they have been going 25 years and are very good, been going there 20 years myself, is there anything I should inform the installer that would thelp them perhaps, any known issues with installing a double din bluetooth unit and how 350z owners fixed them. Its going in an 07 roadster, just things like jacking unit up from below to seal gap etc, anything helpful I can tell the fitters tommorow to make sure my unit goes in and looks perfect.

 

Thanks