One of the New Zealand Mustangs has recently been restored. Its the first of two Pinepac sponsored cars, and was originally built in Australia and raced by Bo Seton and Don Smith. It debuted in 1984 before Bruce Anderson purchased it and imported it to New Zealand, where it was repainted yellow.
Its now been fully restored, and looks like it might have been sold back to Australia, where historic Group A racing is very popular. There is some info here:
http://www.nzmustang.com/History/Racecars/pinepac1.htm