There are rearview mirrors made with a small screen built into it that you can connect to a rear view observation system.Or,depending on the type of head unit you choose,you can even connect a camera to an in-dash screen/receiver unit. If still interested,I will find out some more info on the different products when I go back to the shop tomorrow.
BTW,how are you building your sub box,and have you started it already?I may be selling my fiberglass enclosure,which houses eight 12" subs and only goes as high as the top of the rear seats.I will send a pic if interested.
'02 Eddie Baurer Expedition-5.4L,Laser red,loaded,billet grille,6'8"flip-down screen,two 7" headrest screens,vcp,dvd,Sony Playstation 2,Sony 750 cd head w/7-band eq,Sirius satellite radio,Earthquake PHD-2 3000w class D mono amp,Earthquake 4ch amp,eight Earthquake 12" DBX series subs in custom fiberglass enclosure.Also to come soon-10.4" screen and one more Earthquake PHD-2 3000w amp.
91 Camaro RS with 375hp 355 and LOTS of performance goodies.
Jeff K- MECP certified tech