10 Mar 14
22-year-old winger Andrew Conway has scored two tries in nine games since making the move to Munster last summer.
"I think we will be eager to prove ourselves. I don't think the last two weekend's results are a true reflection of where we are so I think we will be motivated to show ourselves. We want to win in a Lions jersey - there is massive respect for what the Lions is amongst the squad and you do feel that all the time."
Meanwhile South Africa have made ten changes to the starting line-up that defeated the British and Irish Lions 28-25 in last Saturday's second test.
Only scrum-half Fourie du Preez, flanker Juan Smith, lock Victor Matfield and props Tendai Mtawarira and John Smit return to the starting XV.
Lions: Robert Kearney, Ugo Monye, Tommy Bowe, Riki Flutey, Shane Williams, Stephen Jones, Mike Phillips, Andrew Sheridan, Matthew Rees, Phil Vickery, Simon Shaw, Paul O'Connell capt, Joe Worsley, Martyn Williams, Jamie Heaslip. Replacements: Ross Ford, John Hayes, A-W Jones, David Wallace, Tom Croft, Harry Ellis, James Hook.
South Africa: Zane Kirchner, Odwa Ndungane, Jaque Fourie, Wynand Oliver, Jongi Nokwe, Morne Steyn, Fourie du Preez, Tendai Mtawarira, Chiliboy Ralepelle, John Smit, Johann Muller,Victor Matfield, Heinrich Brussow, Juan Smith, Ryan Kankowski Replacements: Bismarck du Plessis, Guthro Steenkamp, Deon Carstens, Steven Skyes, Pierre Spies, Ruan Pienaar, Frans Steyn.