Crusaders coach Todd Blackadder has made two changes to his starting 15 for a crucial Super 14 rugby match against the Brumbies in Christchurch on Friday night.
Owen Franks will start at loosehead prop instead of Wyatt Crockett while Sam Whitelock is at lock ahead of Chris Jack.
Also, halfback Willi Heinz replaces Kahn Fotuali'i on the reserves bench after Fotuali'i was yesterday stood down for one match due to a breach of a team protocol.
Blackadder said Franks and Whitelock deserved their starting spots due to good recent form.
"Both played very well in the match against the Bulls last weekend (35-40 loss) and we felt that they deserved to start in this match."
The Crusaders need to beat the Brumbies to reach the semifinals.
Colin Slade, Sean Maitland, Robbie Fruean, Daniel Bowden, Zac Guildford, Dan Carter, Andy Ellis, Kieran Read, Richie McCaw (captain), George Whitelock, Sam Whitelock, Brad Thorn, Ben Franks, Ti'i Paulo, Owen Franks.
Reserves: Daniel Perrin, Wyatt Crockett, Chris Jack, Thomas Waldrom, Willi Heinz, Tim Bateman, Jared Payne.