[QUOTE=BlakeSwain;916918]Sooo... just got my Crossfire September 2018 and I miss my all-option double din stereos. I hate to Frankenstein and spend money on salvage parts so I've been modeling a design that I'm hoping will be an easy 3d print! I have split the components into 3 parts. Thought I'd show a sneak peak... the HVAC and 2 din were styled originally to the factory styling (center spline) but the lower ashtray/airbagindicator edge areas where the switches will be are rounded and softened. Had to put the badge nice and centered, but have been thinking about leaving out and wrapping in leather, I think the soft edges might be a plus with wrapping. A little feedback?(/QUOTE]
You have taken on a mammoth task, and I hope you keep at it. I see you have added a second design while I wrote this.
I have some experience with making a DD Radio/AC bezel, I modified OEM parts and needed two OEM R/AC bezels, an ash tray module and a centre console bezel to make my project, my switches were moved to the centre console. These parts cost more than I would have wanted but this method had the advantage of using the original mounting screws, tabs and any profile in the OEM interface. The switch mounting tabs have to be sturdy, the switches could be bonded in place of course but that may not be ideal.
An option for you may be to get one Rad/AC bezel which are made of two pieces bonded together, remove the rear part that carries the mounting tabs and screw holes and use it bonded to your part.
Your top two parts should be one part as all the mounting points are on them and the screw holes are on the radio part in your drawing. Your lower switch section should clip to the radio section and use the lower ash tray mounting screws. Ideally it should be one part for strength. A second centre dash would save you time in fitting.
The radio should not put any load on the bezel, it’s weight being taken up by the centre dash. The material you choose must take extremes of temperature to prevent distortion due to heat. The OEM parts are a Polycarbonate/ABS alloy that gives the best physical requirements.

I am planning on making a one piece bezel with the switches in the bottom like your design before I finish paint all the parts. I have to think it over for months before the first cut. Meanwhile I am making four bird feeders that were meant to be Xmas gifts, there is more work than I anticipated though, maybe gifts for next Xmas? ��