The Tui name (or Leda 2E when built by Leda under licence) was what Al McCall called his cars, all F2, Atlantic or Super Vee specs to the best of my knowledge. No doubt Al and Jim Stone would have known each other so anything is possible.

I was listing NZ built championship front running cars only in my initial list. Over the same period, numerically the Huntly built Valours which were really a Titan Mk 6C clone would won hands down although Johnny Johnson built quite a few cars in Christchurch including Norm Smith's Hustler and Gerry Hones (spl?) built 3 GLHs (Gerry, Lloyd & Hugh) for Lloyd and Hugh Owen and Paul Dold. The Jim Murdoch designed and built Begg JM1 was probably the only purpose built FF Begg.