What Chris333 has done is similar to what I have done, but "inverted" if you will.
Fold the bottom part of your plate backwards to 90 degrees just below the actual plate numbers, i.e. fold the part that says Garden State or someother useless info, it's really easy if you know somebody with a sheet metal brake, takes less than 5 seconds, I did my the slow and premitive way by sandwiching the plate between two pieces of wood, clamp it down tight, and slowly use a mallet to tap/bend the lower part back to an L-shaped right angle.
You can then fit this L-shaped right angle sheet metal into the space between the main part of the bumper and the lower lip, it should fit somewhat snug, you can then use two black wire-ties through the upper plate screw openings to the vertical supports on the bumper itself.
This has the benefit of reducing the visible height of the plate almost making it look somewhat like European plate, and it is recessed below the main bumper body, it is really slick!! Hhowever you should leave the identification of the state/province above the plate number visible so that LEO won't have any excuse to issue you a ticket.
Technically our provincial Highway Traffic Act does not allow alteration of the plate, but in reality no cop will ever issue such citation unless the driver was giving them a hard time, heck most license plate frame from dealerships etc. covers up the lower part of the plate below the actual plate number anyway so bending that part out of the way is just fine.
You will need to cut two slits on the bent portion to clear the two vertical ribs that are part of the OEM grill opening area so the plate can be pushed back to sit flush.
