Check out my old post in this link. I actually made it so my front license plate will slide up and down on a track. The track is mounted to the back side of the bumper. I was going to make a motorized version of it over the winter but I'm still working on my motor build and never got to it. It works very slick. I came up with an idea that it will basically stay wherever you slide it to without the need for any pins or locks. Even though it's my own design, it's the best i've seen around. It works excellent for use at the track when you don't want the plate blocking your intercooler.
NOTE: It's not down all the way in the pics.
Post #33 in the below thread
http://www.dsmstyle.com/forums/showt...hlight=license