Hi there: I just bought an 04 Prius from my brother. He's in PA and didn't need a front license plate, and I'm in NY and I do. Thanks to this forum I found where the front plate mount is located, but it only has 2 screws. Question (and I apologize in advance if this is dumb) - are those two screws for attaching the frame to the car, or attaching the plate to the frame? What screws are recommended for the other? Thanks in advance!