V8 Supercar racing has opened the door for other manufacturers to compete alongside Ford and Holden from 2012.
New rules for the series announced in Melbourne today will allow other makes to join, as well as reducing costs in the category.
The series will remain for V8s only, but the cars used will no longer have to be Australian-made, nor have a five-litre engine.
Five-time V8 Supercar champion Mark Skaife has put together the blueprint for change, saying the sport needs to ensure it continues to grow as well as ensuring the survival of teams already competing.
Skaife says car building costs will capped at $250,000 - a significant reduction on current levels.