Here is my final version, which is the "flat" edged one from earlier in this thread which has then had its edges significantly modified to fit the specific custom installation I'm doing in my car. This is an example of how you can take the base versions I posted earlier and then modify them to fit your specific custom install.

Later, there will be photos and video of the actual installation location in the car itself.

Attached: Blender file - Custom Empeg Fascia - Honda Custom Install.blend

Enjoy!