The sharknose vert that has sold a bunch of times at auction is pretty easy to distinguish as a fake. There was a whole article in the Graham club newsletter about it (it was made sometime in the 70s). The best part was it sold again at auction for over 100k well after the article was written. I doubt the buyer would have paid that money if he knew it was built recently. What is the date on the plates in the pictures of the Willys?