For additional $45 bucks Primitive rally can add aditional plating for added protection to their skidplates. adds an 8" wide, 14" long tail, that reinforced the oil pan area and extends back 5" to protect the tranny on turbo cars.  Uses recessed rivets to attach, and is welded for strength.  For stage rally or extremely heavy duty use you can also inquire about full rally prepped set up.