Given the AC grills are so complicated, it makes sense to keep the OEM bezel. Cut out what's necessary to fit a Double DIN head unit; keep all the mounting hardware on the original frame, and 3D print an insert, or frame, to fill in the gaps and clean up the edges. It could either fit on after the HU is installed by using the two upper mounting screws; or before the HU is installed being held in place by the flange around the HU face plate.
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