Thanks for all the replies. I am new to this forum.
I did call a Lexus dealer locally and he told me an astronomic amount to get it installed. He said they have never done one before and suggested going OEM.
I am biased towards an in-dash navi system that can also support the rear-view camera. Any suggestions on brands and models that can do that?
Budget - 1000 to 1500.
-Brij