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Mostert, who won the great race at just his second attempt, was equally emphatic.
"It's a fantastic brand and our Supercars series has been built on the Ford-Holden Rivalry over the years," Mostert said.
"So for them to go, it just makes no sense and I think it might kill the sport a bit."
"But I just drive race cars and I'll let the commercial teams work all that stuff out."
Mostert believed his triumph should send a pretty strong message that Ford needed to stay.
"Yeah, for sure," he said.
"We want Ford to be here next year, and I'm pretty sure they will be."
Mostert and Morris defied the odds to win the longest and most chaotic edition of the Great Race.
Mostert and Morris gave Ford their second Bathurst 1000 victory in a row this year. Photo / Getty Images
The pair's Falcon started last on the grid and by lap 45 was lodged in a tyre barrier at the circuit's worn-down turn two.
But 10 safety cars, 13 pitstops and a one-hour suspension of the race to repair the damaged section of track helped to push them up the field.
It wasn't until the final few turns on the 161st and last lap that Mostert was able to pass championship leader Jamie Whincup, whose spluttering Holden was running on empty. While Red Bull Racing team owner Roland Dane said Whincup cost his team the race by ignoring their orders to save fuel, Mostert endorsed the championship leader's strategy.
"To get so close and come short, it's probably better off than not having a crack and coming second," Mostert said.
"It's exactly like Jamie said. He said he thought he'd push and if he's got fuel in the tank he'll make it, and win the race and if not, then at least he had a good crack.
"You have to leave it all out there at the Bathurst 1000."
The 2014 race attracted 195,261 people, the second biggest crowd in its history, surpassed only by the 50-year anniversary celebrations in 2012.
-AAP