Going to need to be good with Fiberglass. It's a curved surface. The bezel for the headunit will be very small not easy to make.
Edit: Actually it would be very easy to make a mold of the cubby area since you could use the Cubby Lid. Then you would just trim it out and fiberglass that to the bezel included with the headunit.
For the double din spot you could layer blue tape to copy the contour pretty easy I bet.
Maybe something available in Japan??