While watching the superb old Pukekohe footage Bry posted up on another thread, I noticed at the end a link to more footage from Puke, but during the 1967 and '68 seasons, though its listed as 1966 and '67 seasons, so maybe its early in each season?

Note though the Custaxie battling the Paul Fahey Mustang and Jack Nazer Lotus Anglia during the final season of the Allcomers, and then from the following season, the site of four Mustangs altogether (Fahey, Rod Coppins, Frank Bryan, Red Dawson) during the first season of Group 5. This is classic stuff!