Spoilers

By way of comparison, here is a genuine Phase3 fitted with the factory spoiler. Note that the feet are different, and the means of adjusting the angle of the spoiler.

Note that when the spoiler was used on Phase3 race cars at Bathurst, and also on later XB hardtops at Bathurst, the wing was cranked over to almost turn from being an aerofoil parallel to the ground to a genuine spoiler as we would think of one these days. It is worth noting that in the U.S. 1970 TransAm racing series, the Boss302 Mustangs used the same aerofoil cranked over to replicate a spoiler.