“Series Production” made a return to Australian motor racing in 1981 when a new set of Group E regulations was issues by CAMS.

[1] The new Series Production Cars were, like their predecessors, intended to be mass-produced vehicles made suitable for competition by minimal modifications.

For 1984 CAMS announced a revision of the rules, with a wider range of models now eligible to race in Group E and freely available optional equipment (such as limited slip differentials) now permitted.

[6] and in the same year the Australian Production Car Championship was expanded to a series format and attracted sponsorship from the Yokohama tyre company.

The new title, which was contested under revised Group 3E regulations,[10] permitted a much larger variety of models to compete including GT type cars such as Porsche, Ferrari and Lotus.