Hi, I'm getting ready to install a Pioneer headunit and screens for rear seat entertainment system in my 2016 NVP. I believe I've gotten everything I need with the exception of a installation kit. I'm not sure if it is necessary since radios typically come with a mounting cage. From what I can tell it just fills any gaps between the stock opening and the new unit if there is any. Those of you who have already gone down this path, did you use a mounting kit from Metra, Scosche, or any of the others? Andy