2004 Australian Nations Cup Championship

Finishing second was Nathan Pretty driving a Holden Monaro 427C with David Stevens third in his turbocharged Porsche 911 GT2.

59 year old Australian racing legend Peter Brock, after racing a Monaro for Garry Rogers Motorsport in 2003, left to form his own team (with Monaro's supplied by GRM) with himself and oldest son James Brock doing the driving.

GRM themselves would continue with Pretty driving the #427 Monaro as well as servicing the Team Brock cars between rounds.

From 2005 CAMS would revive the Australian GT Championship with the Nations Cup cars (with the exception of the Monaros) eligible to race in that series.

[2] 3 bonus points were awarded to the driver achieving pole position in each class during qualifying at each round.