Wary of what's coming, the Wallabies know they must match the Springboks' physically to avoid crashing back to earth in Cape Town.
A week after notching a first win over the Boks at their Ellis Park fortress in Johannesburg in 62 years, the Wallabies face the back-to-back world champions at sea level on Saturday.
Joe Schmidt's side can shoot to the head of the Rugby Championship table with another bonus-point victory.