Is that Tahuna in the North... Or Tahuna Beach near Nelson South Island?.... If the later I also saw a really clean green with tan interior Morgan parked up in Nelson. In November.... NZ roads would be perfect for a Morgan (weather not too shabby either).... Only saw the one in the month I was in the South Island (other than a couple of 3W oldies in the bike museum).... But there appear to be more based in the North Island.... Enjoy your trip, it's a great place.

K