First of all, let me start off by saying this is the best radar/laser etc. website on the internet. I have been reading for hours and hours for the past few weeks. I am going to purchase an Infiniti G37 very soon. I want to put a quad LI system on it. I am looking for your expert recommendations. Is it ideal to put 2heads on the front and 2heads in back? Where on the vehicle would be best to mount? Horizontal or Vertical? I do not want to take any shortcuts and want complete performance and protection. I will be using a new Valentine One for radar coverage. Any advice, pictures, videos etc. will be greatly appreciated!