So CASO, it is ok to violate the law if it suits your purpose? If you don't agree with a law just ignore it? The fact is, it is illegal in EVERY state to stamp your own VIN plate, no ifs ands or butts, plain and simple. That being said, is it done? Yes! Do most get away with it on antique vehicles? Yes! Do those who don't get away with it go to jail? Yes. So, do as you please but be ready to accept the punishment if you are caught.