ANSWER...from one of these two sources:
1) In past years a member named "Ron" made them, out of ABS plastic. He stopped making them several years ago. Sometimes you can find them for sale by another member who is selling their VX. I got my front and rear skid from a member selling his VX.
2) Member "rowhard" currently makes them. He started making the front plate a few years ago, and just lastt year started making the rear skid. Contact him for price and details.