Alex at Automobilia in Orange, CT did my install this past week.
Front: ZR4 shifters towards the outside then LI standard heads, 9500 radar detector head in the center.
Read: LI slim heads above plate to the side and ZR4 head in the center.
In ashtray: LI switch, 9500 display, 9500 controls.
Passenger side under glove box: USB connector and kill switch for 9500.
I couldn't be happier.