I wanted to mount my Samsung Note 8" tablet in my car, but there wasn't enough room in the dash. I also gave it the ability to move up out of the way to access my equalizer.
Use high heat tolerant plastics. Not PLA.
Use ABS or PETG, PLA will not hold shape in a car due to heat.
You made need to make your own DIN insert. The one I made fit into clips that inserted in.