[Tinker51]

You will find that each manufacturer has a slightly different shape. There is a web page that has pictures of the various types for a virtual side by side comparison but I can't recall what it is. Perhaps someone else here knows it. The SPF fender seems ever so slightly taller and does not turn down as much as some other cars. As for who is most authentic, who knows. A friend from a car club had three origionals, none of them were exactly like the others. Maybe someone with more knowledge than mine can step in here and shed some light.