From what I have read, it seems that the Chevrolet SS model name was used by GM South African for ‘71 and ‘72 as applied to the 2 door Holden Monaro that was built in Port Elizabeth, South Africa from CKD kits imported from Australia. These South African Chev SS cars used a different grille, running lights, and quad headlights while the Australian Monaro had twin headlights.
Interestingly, at the same time that the Chevrolet SS was being marketed in South Africa, GMSA was also building the 4door version of the car (CKD) and marketing it as a Monaro GTS along side the SS. As in Australia, the Monaro version had the Holden grille with twin headlights.
I understand that the Chev SS is in high demand in Australia, so a lot of the South African production (about 2000 units/year) has been bought up by Australians and shipped back to Australia due to the uniqueness of the grille, headlights, badging, etc.