My faceplate / topcase became warped, looking to replace it.

Sitting on the shelf, the plastic topcase warped, to the point that there were ghost-presses on many of the buttons. I attempted to correct it, but the warping was too extensive + one of the circular cutouts on the rear (for the jacks) cracked in the process of trying to un-warp it. I couldn't find any means of acquiring this part, in order to replace it though.