Waratahs centre Timana Tahu claims his cross-code transition is complete and believes his Wallabies tour experience will translate into results on the field this season.

Tahu starred in the Waratahs' 60-nil thumping of the Fiji Warriors in Newcastle on Friday night, scoring a try and sending winger Lote Tuqiri over the line for another.

The former Newcastle and Parramatta NRL star, who returned early from the Wallabies spring tour with a hamstring injury, said his 12 months in the 15-man game will be evident on the field this season.

"I feel like I'm a better player, I think after the Italy game (with the Wallabies) I sort of worked things out," Tahu said.

"It probably took a year for me to scratch up my knowledge and know how to play rugby, so this year I'm coming in confident and I'm expecting big things from myself.

"Hopefully I'll have a good season."

A long line of hamstring injuries have limited Tahu's time in rugby but the outside back said after Friday's hit-out he was feeling fit and confident in the work he'd done during his rehab.

"I think our training staff has got everything down pat, you really don't get to rest when you're injured, they find ways to flog you," Tahu said with a smile.

"... I trained through the Christmas break and was expected to come back at the start of training to be fully fit.

"My conditioning is up pretty good I think, it's only going to get better as I get more games in."

The Waratahs will face the Brumbies at the Sydney Football Stadium in their final pre-season trial on Thursday.

Tahu said the Brumbies match-up would give him a better gauge of where he was at.

"I expect they're going to be full strength sides, I'll be probably up against Stirling Mortlock so it'll probably give me a test on how much I've prepared and how much the team has prepared," he said.

"Going into that game is going to be a good challenge for us before the Super 14 starts."

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