Stephen Simpson will be behind the wheel of the South African A1 GP car at the Portuguese event.
Sunday's World Cup of Motorsport race takes place at Estoril in Portugal.
Simpson represented the South African team in the first A1 GP race at Brands Hatch in the UK where he finished sixth after starting right from the back.
Tomas Scheckter raced at the German A1 Grand Prix where he had to retire from the race after a battery problem.
Each event is held over three days - Friday through Sunday - and consists of three one-hour practice sessions (two on Friday and one on Saturday), four 15-minute qualifying sessions with a 10-minute gap between each on Saturday, and a 15-minute warm-up session and two races (a 30-minute sprint and a 60-minute feature) on Sunday.
Teams may complete a single flying lap in each session with the best two times determining the team?s position on the starting grid for the flying start sprint race.
The starting order for the feature race, which is from a standing start, is determined by the finishing order of the sprint race.
SABC will broadcast Saturday's qualifying live from 14:00 to 16:00 and Sunday's two races live from 13:00 to 16:30.
Championship points after two rounds of 12:
1. Brazil: 30
2. France: 29
3. New Zealand: 29
4. Switzerland: 17
5. Australia: 16
6. Mexico: 16
7. Great Britain: 15
8. Canada: 14
9. Malaysia: 11
10. Germany: 8
11. Ireland: 8
12. Netherlands: 8
13. Japan: 6
14. South Africa: 5
15. Pakistan: 4
16. Indonesia: 3
17. Portugal: 3