Slowfashow

I have a license plate from Japan that I got from a friend that was stationed over there. He had it on his 300ZX and had to get rid of the car before he came back to the states. He brought his license plate back with him and I asked if I can buy it from him. I bought it for 50 bucks (my offer). At first I got it for show purposes to mount in front of the G I had but now I am trying to find out if there are fees I can pay to transfer my registration to these plates. Does anyone have information on that? I might be out of luck on this but if anyone has information that would be great. Thanks