A dominant favourite, Meccabah ($1.75) went straight to the lead and was far too good for a maiden field over 1660m.
The mare had 10 starts in England where she placed four times at distances up to 2000m.
She was bought by John Haseler's Glenlogan Park Stud as a broodmare prospect but was first sent to Dunn with a view to winning some races.
“I will leave it up to John whether she races on or goes to the breeding barn,” Dunn said.
“But she is a nice mare and there is no reason why she can't win again and get out to 2000 metres or further.”
“We thought she would win first up at Coffs Harbour but a lack of early pace beat her. So we changed tactics and went to the lead today.”
Caloundra filly Baccarat Baby ticked another box for a trip to Melbourne when she won her fourth race in a row.
“I wanted to see today if she could run a strong 1600 metres and she has done that today,” he said.
“We will come back to Doomben on September 15 over 1600 metres again and will test her against better class. Then we can start talking about the south.”
Vandyke got a double when The Mechanic ($3.20) won.
Stewart had ridden 18 winners since July 1 when he resumed from suspension.