But the former Queensland Reds flyer has warned his teammates to prepare for a brutal arm wrestle rather than a free-flowing try-fest in Cape Town as the Brumbies aim to keep their perfect season intact.

The Brumbies will play the Cape Town Stormers at Newlands in South Africa on Sunday morning in a re-match of last-season's semi-final clash.

The Brumbies are trying to adopt a new game plan this year that gives their back-line stars the freedom to strike from anywhere on the field.

It has delivered 15 tries so far, but only one winning bonus point. That's something they're determined to change against the Stormers, but they'll run into a brick wall of muscle against one of the best and most physical teams in the competition.

"We know the Stormers are going to be physical, we just have to weather the storm early and then find our shape and the way we want to play," Toua said from Cape Town.

"But the good thing for us is that we've won our three games this year in three very different ways, so I think that puts us in good stead.

"The scary thing is that I don't thing we've played anywhere near as well as we know we can get to. But when you win, winning becomes a habit and you build belief through that."

Toua has never played in Cape Town despite making his Super Rugby debut in 2011.

Then speedster feels he has finally shaken the injury worries that troubled him for the first four years of his career and limited him to just 13 games since his first match for the Reds five years ago.

That's good news for the Brumbies, with Toua finding his feet in the No.15 jersey and Robbie Coleman building up his game time from the bench after recovering from a calf injury.

Toua is yet to score in Brumbies colours after signing for the club in the off-season.

"I'm loving it, it's good to get through three 80-minute games and I'm just building up the combinations," Toua said.

"Once we click I think some of the breaks will come into the game. For now I'm just trying to do my bit for the team and then as the season goes on you can start to look for the other things.

"There's still lots of improvement in our game."

The Brumbies will go into the contest with an unchanged 23-man squad for the first time this year. If they beat the Stormers, it will be just the second time since 2005 that they've started a season with four consecutive wins.

SUPER RUGBY ROUND FOUR

Sunday: Cape Town Stormers v ACT Brumbies at Newlands, Cape Town, 4.15am. TV time: Live on Fox Sports 2.

Brumbies team: 15. Aidan Toua, 14. Henry Speight, 13. Tevita Kuridrani, 12. Matt Toomua, 11. Joseph Tomane, 10. Christian Lealiifano, 9. Tomas Cubelli, 8. Jarrad Butler, 7. David Pocock, 6. Scott Fardy, 5. Sam Carter, 4. Rory Arnold, 3. Ben Alexander, 2. Stephen Moore, 1. Scott Sio. Reserves: 16. Josh Mann-Rea, 17. Allan Alaalatoa, 18. Les Leuluaialii-Makin, 19. Tom Staniforth, 20. Jordan Smiler, 21. Michael Dowsett, 22. Robbie Coleman, 23. Nigel Ah Wong.