I'm a bit surprised at the range of questions on this thread.
I usually get just "What year is your car?" To which I answer, "1957"
That seems to answer 99.9% of the askers. And it's not like there are a lot of 356's running around here.
If they persist, then I get into the "Custom Car" thing and about how I built the car and that usually satisfies most people. I never use the term "Kit Car" (even if they ask) because, after all, nothing fit when I built the damn thing so it became a "Custom Car" in my eyes, just like a custom Hot Rod.
I know.....All this amounts to "Mice Nuts" (they're pretty small) but that's my story and I'm stickin to it.
Beyond about 30 feet, even Real Porsche owners can't tell a real from a replica, so how will "Joe the Plummer" in America, most of whom think they're looking at a VW Karmann Ghia??
And I NEVER mis-represent my car as the real thing at a show. I usually decline the offer to be judged unless it is a "spectator" ballot, and I always place a sheet on the windshield when at a show, clearly stating that it is a replica. Honest is as honest does.