Dealers probably drilled in the plastic bumper and mounted your plate as follows:
This is also the case with many other gt86 in town:
However dealers likely chose to attach the mount using the upper two holes instead of the bottom two holes.
Do your radiator and car a favor by shift up your plate mount and screw in the bottom holes instead the upper holes. IMO car will get at least 15% more air flow. It's suppose to be the bottom two holes anyways...
versus
The curvature also fits perfectly!! 
Summer's here, why not keep things cooler under the hood?
P.S License plate blockage may also affect performance see VW dyno test
http://www.vwvortex.com/news/afterma...ng-horsepower/
Improve engine cooling general rules
http://www.enginebasics.com/Engine%2...ing%20Pg4.html