Before the June international break the Blues had the Crusaders under pressure for the majority of the match, only to let it slip 26-21.
"We believe we've got a lot to play for. The boys are certainly up for it," assistant coach Glenn Moore said.
"Our focus all year has been on making sure we perform. We believe we've made good progress and particularly in the last two games."
Asked about their potential to have a big say in how the Australian conference finishes, he said: "We haven't really talked about that. We've tried to keep the focus about us and playing well and performing well for hopefully a full 80 minutes.
"We definitely want to finish well. Our fan base and sponsors are really important to us and we want to finish the year on a really good note."
Listen: Out of the Box rugby podcast
Prop Charlie Faumuina (knee) and midfielder George Moala (elbow) are again unavailable but fullback Melani Nanai and midfielders Piers Francis and Male Sa'u have all been cleared after suffering knocks.
And although openside flanker Blake Gibson, outstanding earlier this season, returned for the Blues off the reserves bench at the Cake Tin after his recovery from a thumb injury, Kara Pryor keeps the No 7 jersey.
Lock Josh Bekhuis is bracketed with Scott Scrafton but came through training and is expected to start.
The team to play the Brumbies at Eden Park tomorrow at 7.35pm is:
Melani Nanai, Matt Duffie, Male Sa'u/Matt Vaega, Piers Francis, Tevita Li, Ihaia West, Bryn Hall, Steven Luatua, Kara Pryor, Jerome Kaino, Josh Bekhuis/Scott Scrafton, Patrick Tuipulotu, Ofa Tu'ungafasi, James Parsons (c), Sam Prattley.
Reserves: Quentin MacDonald, Nic Mayhew, Sione Mafileo, Gerard Cowley-Tuioti, Blake Gibson, Billy Guyton, Matt Vaega/Michael Little, Lolagi Visinia.