The class has produced 10 different winners from 15 meetings so far this season, paving the way for an intriguing Victorian title at Portland’s Southern 500 Speedway.

“There’s such a diverse range of people than can win,” Sinclair said.

“It highlights the competition in the sport we’ve got at the moment, and the quality we’ve got in Victoria.”

With the Australian titles next month, Sinclair said Saturday night would give a good indication of who the main contenders will be.

He expects Warrnambool’s Australian champion Dylan Willsher, Buckingham brothers Brooke and Josh, Jack Bell, Terry Rankin and Shane Van Duynhoven to be among about 15 drivers who could take out the Victorian title at Portland.

Sinclair is also well in the mix for the state title, having won at Bordertown’s Tolmer Speedway last Saturday night, edging out fellow Warrnambool driver Bell in a thrilling A-main.

“We had a really good race with Jack Bell,” Sinclair said.

“It was a bit of luck that we ended up getting the win. It was by a couple of car lengths. It was pretty close.

“Jack was winning with about three (laps) to go. We were running two different lines on the track.

“We had to earn the win, which gave me a bit more confidence in the car.”

The 25-year-old will be gunning for his maiden Victorian title on Saturday night, having had a few podium finishes in the past.

“I think the highest (I’ve finished) was third. I’ve had a few podiums with them, but never actually (been) in contention to win one,” he said.

“I know we can do it – we’ve just got to get everything right.

“We won last weekend, which is a bit of a boost of confidence (that) the car is running well, the motor is running well, everything is sort of good.

“Everything is going as good as we can make it.”

Sinclair said his team has raced at Portland’s Southern 500 Speedway three times, but twice crashed off the start.

But a stronger starting position in his most recent attempt saw him finish “fifth or sixth”, and he is hoping to secure another favourable position this weekend.

“If we can start somewhere in the first two or three rows, where you have less pile-ups of cars (it helps),” Sinclair said.

Saturday night’s meeting will also feature standard saloons and vintage hot rods as the support classes.

Southern 500 Speedway race co-ordinator Adam Holt said about 30 cars had nominated for the formula 500s, and about 12 each for the other two classes.

Gates open at 5pm with racing from 6pm.