Seven years after winning Australia's most famous motor race with Paul Morris, Mostert has succeeded with Lee Holdsworth.

After first racing at Mount Panorama in 2004, Holdsworth is a Bathurst 1000 champion on his 18th attempt.

Morris made history in 2014 when he won at his 22nd start - the longest wait for a maiden Bathurst victory.

Holdsworth was left without a full-time drive this year but managed to score a seat in Mostert's flying Walkinshaw Andretti United Commodore.

"I've deadset not had a car anywhere as good as that," Holdsworth said.

"It was just an absolute pleasure to drive all week.

"I still feel like I'm in a bit of a dream.

"In rollout, we had a super quick car, just one moment in the race.

"It was so cool and I've been wanting to get this one on the CV for a while.

"If someone had have said to me at the start of the year, 'don't worry sit out for the year', you'll get the Bathurst 1000, I would have said 'righto, I'm happy sitting at home.

"But obviously it's hard to watch when you've been doing it for so long, you still feel like you're capable of running at the front so it was a hard year but this one has seriously topped it off.

"What a way to end a pretty crappy year.

"I wouldn't mind getting back into full-time driving but obviously realise I'm at the end of my career.

"I would love to jump in a full-time seat next year but I wouldn't be holding my breath."

Due to COVID-19, it was the second year the Bathurst 1000 was the Supercars' season-finale.

But the race will revert to its traditional October date in 2022 as part of the 13-round Supercars championship that will commence in early March.

Commodores will again be on the grid next year, before General Motors rolls out its new Gen3 Chevrolet Camaro cars for the 2023 season.

Australian Associated Press