My local dealer has been issued screws to attach the rear plate. I had mine drilled yesterday, I asked them to do it for all all four holes (to eliminate rattles and to match most frames). Screws are a bit smaller and shorter than I had expected, but enough to secure plate and reasonably thin frame.
They have nothing yet for the front, I have ordered the after-market front mount I found in the vendor section of this site. It attaches to the receptacle for the front towing hook, needs no drilling.