Pixel 3XL Otterbox Car Mount with 1994 Camaro Z28 Mount Base

I am working on this phone mount for my 1994 Camaro Z28 and I will also adapt it to other mounts later on for my other cars. I am leaving this in two parts, so anyone with a Pixel 3XL otterbox can print the mount and put it wherever they like. The other mounts will come later, right now I am using cmcraigs awesome idea for our Camaro.

The holder has two areas where the Pixel 3XL will slide into it, and has retention on the bottom and both sides. I was thinking of copying the otterbox style cl