 Richards went on to finish the turbo era in style when he drove the GT-R to win both of the "Clarke Shoes Group A Finale" races at the 1992 Australian Grand Prix in Adelaide.For 1993, Australian touring car racing moved to the 5.0L V8 formula open only to Ford and Holden (though at the time, naturally aspirated 2.0 litre cars were allowed by CAMS and actually had their own championship run concurrently with the ATCC.These cars would soon evolve into the Super Touring class).