UPDATE:
I have extruded and test printed of the 2nd layer of the switch bezel (clips/holders for the oem switches). The test came out awesome, and the buttons slide right in. I have almost completed the design of the 2nd rear layer for the HVAC & double din area all-of-which will be using the original oem clips and mounting holes. Once I have these 100% dimensional as the switch holders... I will start to add the front faces of the bezels. I have drafted the overall center dash bezels on more occasions than I care to count, and by starting with the 2nd layer; and then adding the top final surface area... feel I should be able to really make this a reality more than ever before!
Enjoy!

3D Print - Rear2ndLayer - Switch Holder