Tevita Kuridrani comes in at outside centre to partner Matt Toomua in Australia's midfield, which leaves Adam Ashley-Cooper to replace Pat McCabe on McKenzie's flank.
McCabe suffered a recurrence of a pre-existing neck injury in the most recent loss to New Zealand, and Ashley-Cooper, being the versatile talent he is, will go about his business with some security.
But that's not to say his safety in the position makes him invulnerable to South Africa's might, and what a might he faces in the form of Bryan Habana, one of those tied with Folau as the Rugby Championship's leading scorer so far.
Australia's re-introduced wide man will be wise to protect his inside channel in the pace battle, and he is far more likely to encourage his team-mates in floating off his shoulders.
The one distinct advantage Foley will undoubtedly see in this scenario is Ashley-Cooper's height dominating that of Habana, so any cross-field ball will need to be on point if his fellow Waratah is expected to latch on.
The same goes for Steyn in a territory battle, however, and any slight unfamiliarity in positioning from Ashley-Cooper could see probing kicks prodded through with the intention to release Habana behind enemy lines.