"But this, this is better than the seven wonders of the world I reckon.
"It's hard yakka racing against these legends.''
McLaughlin was going to be a hard act to follow after backing up from his runner-up placing behind Whincup in Saturday's sprint race opener to claim his second win of the year in race two.
It added another chapter to his already remarkable story.
McLaughlin became the youngest winner of a V8 race this year, claiming line honours still 58 days shy of his 20th birthday at Pukekohe in his native New Zealand.
The youngest to ever get behind the wheel in the second tier Dunlop Series at just 16 years of age, McLaughlin was the category's champion by 19 last year - another record.
But Mostert stole the limelight in the 100km race three after swamping pole-sitter Will Davison at the start and defying wet conditions and oil on turn three to grab an historic round eight win.
He finished ahead of Ford teammates Davison and Mark Winterbottom, marking the first trifecta for the Blue Oval since the 2012 Phillip Island round.
Mostert did not enter the V8 series this year until round four in Perth but by the time he arrived at Ipswich he was 24th in the 28-man field after eight top 15 finishes including three top 10s.
"He really has got what it takes. He always had the potential. I am just glad we were able to give him the opportunity,'' Mostert's team boss Dick Johnson said.
McLaughlin kept Mostert honest in race three before he became one of the unfortunate victims of a spate of punctures, dropping from second to 20th.
Another high-profile victim was Whincup who blew a tyre on lap 10 while in the top 10, ensuring he finished third last in race three.
He still leads the series, 129 points clear of Holden teammate Craig Lowndes.
The next round will be held at Winton from August 23-25.
- AAP
