Hey man. i just did the exact repair your talking about.
PS (its not a plastic piece, its actual wood, with lamination)
See my "center console piece replaced" post for the results
Unfortunatley, you wont get a perfect match for the wood grain, but it'll still give a very nice appearance.
The part you need to replace is around 150-170 bucks from a dealer...its a dealer only type thing.
take a flathead screwdriver and pry up the "front" (being the section towards the front of the car). there are two retention clips in the rear, the piece will come out easily at this point.
You do need to remove the shift knob as well to do this. It's an easy replacement. save all screws and parts from the old piece as you will need to reuse them. if something like a bulb is bothering you, now would be a good time to replace that as well. Also, give the shifter area a decent cleaning before you install the new part, it gets mad dirty down there.
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