Helmet's Cox Plate campaign will depend on his performance in the Caulfield Guineas

Top three-year-old Helmet will look to continue his success at Caulfield tomorrow when he runs in the $1 million Caulfield Guineas.

The Exceed And Excel colt has struggled with maturity issues throughout his short career, however, is said to be a changed horse since arriving in Melbourne.

“His whole demeanour has changed since being in Melbourne,” said trainer Peter Snowden’s son Paul Snowden.

“He’d say sorry to you if he trod on your food, he’s that quiet.”

Snowden is hoping Helmet can emulate his last start performance when he won the Group 3 Caulfield Guineas Prelude by three and a half lengths.

“He’s so versatile and he races up on the speed in these types of races,” he said.

“Hopefully we can do everything right.

“It’s just the little things he’s doing wrong that cause him to come undone but when he does that right we see what he can do.

“I can’t fault the horse.”

Helmet is expected to sit on the speed in tomorrow’s race where he will take on the likes of Smart Missile and Golden Rose winner Manawanui.

“He’s drawn eight so we can have a good look (at where everyone else settles),” Snowden said.

“He’ll be in the first two or three but whether he leads or not depends on what the others do.”

The Snowden stables will be using the Guineas as a test run for the $3 million Cox Plate at Moonee Valley on October 22.

“We’re using this race as an indication of whether he’ll go to the cox plate,” Snowden said.

“If he does win he’ll definitely be taking his place.”