Ford star Scott McLaughlin may have won the Supercars drivers' championship in a canter but Holden are hot on his heels to cause an upset in the team title.
DJR Team Penske's McLaughlin and Fabian Coulthard lead Triple Eight Racing's Shane van Gisbergen and Jamie Whincup by 116 points leading into the season-ending Newcastle 500.
There are 576 points up for grabs this weekend and the Holden duo are eyeing an upset after beating the Ford boys in the first practice session on Friday.
McLaughlin posted the quickest lap but Coulthard finished in 12th which means Whincup (third) and van Gisbergen (sixth) would have beaten them on points in race conditions.