I went to Tap Plastics here in Seattle and found some 3/8 stock (PVC?) that has a texture, similar to the Behr AC console I had.
As you can see, the texture is more than the original but i think it looks pretty good. This is bonded to 3/16 plylwood for strength and rigidity. Small angle brackets are sandwiched to provide mounting for the side panels, dash, shift surround and trans tunnel.
It's very solid and with no sqeaks or rattles after 4 years.