i have a vacuum license plate holder that folds down to allow my plate to be shown when the truck is running. i also have a smooth roll pan but my gate is just a repro w/o letters... kinda trick because when the truck is in a parking spot or just sitting off. the plate isnt shown and it is smooth back there but once the truck is running and driving i am legal, it has a light and everything for it just when the vaccu of the engine dies down with my cam and higher RPM's the plate starts to go back up..... cant hold it at 3 grand for more then a min or so.
I'll try to find you a pic..
http://www.angelfire.com/nj4/america...ssemble71.html
The last picture on that page has it sitting at a car show with the old gate on it, sorry i dont have one were the engine is running