I think you need to determine the production date of your car. If you have the 1946 style front end sheet metal and your car is titled as a '47 then your car was assembled during the first quarter of 1947. If your car has it's original '46 style bumper with the single hole, then I would use the '46 style plate bracket. The plate bracket attaches to the hole in the bumper and the "spreader" between the bumper guards as shown in posts 4 and 5. If you don't have the "spreader" you will also need to purchase one also. As corvette points out in Post 9, all the information is available in the '41-48 Ford Book offered by the V-8 Club.