There's a familiar feel to the Welsh side named to play the Springboks - 11 Lions squad members have been named by Warren Gatland in the starting line-up.
And Warburton believes that a win will bring the memories flooding back.
"We want a scalp in a Welsh shirt now," he said. "To win the series for the Lions was immense.
"We will take massive confidence from that, but until we beat one of these (southern hemisphere) sides we can't call ourselves contenders for the World Cup.
"If we do win (on Saturday), there won't be massive celebrations because we feel that is the level we are at now."