After installing an Android Auto head unit into my car, I realized there was really no space to put my phone if I had a passenger. The cubby and drink holder are too small and I have a touring so I cannot replace my switches with a pocket without losing functionality. I started searching for car mounts and outside of the universal clip on mounts, it seems that the only 'factory feel' phone mount for the 370z has a few drawbacks. First, it's about $80 and apparently (based on reviews) cuts into the passenger knee room enough to be a nascence. I also wanted something that the phone could just be slotted into without needing to use two hands and something without magnets or metal plates as those can mess up your GPS and compass when using the phone for those functions.
Because I'm a cheap skate with too much time on my hands I started looking into ways to make a factory look option that would stay out of the way of the driver and passenger as much as possible and be easy to install. I've iterated about 10 designs over the past few days and finally have a working design.
https://www.thingiverse.com/thing:5326750
Additional pictures and info in the 3rd post