The 1983 championship saw the debut of the Bap Romano owned and driven Kaditcha K583 Cosworth, the first Australian Group A Sports Car built with a closed top and Ground effects aerodynamics.
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Queensland based owner/driver Bap Romano won the series driving his Romano WE84 Cosworth from 1982 champion Chris Clearihan (driving the Kaditcha-Chevrolet that Peter Hopwood used to win the 1983 Championship) and Andrew Roberts driving a self designed Roberts S2 Ford.