That was me...we had a Humber 80.
It was great racing here in the '60's - we couldn't get the fancy racing cars, so we made them. My favorite car of all time is Ralph Watson's Lycoming Special. My boss freighted an Evo down to Teretonga to race in a production car race last week. Jim Boyd used to toss a bag into the Lycoming Special, drive all the way down, race on the weekend and then drive home to Auckland for work the next day.