I am now the owner of an 05 exl navi that was a gift from my mother. Vehicle was well cared for, but I do have one slight issue. The navigation system is so out of date, and I am not sure if updating it would be worth it. Is there a way to remove the navigation system and either put the stock radio in its place? or would it be a better idea to swap in an android head unit? I also considered leaving the space empty for a possible tablet install. is this a good idea? any thoughts are appreciated.