Amakhosi go into this second leg of the celebrated MTN8 semifinals with the advantage after having scored an away goal in the 1-all draw in the first leg of the competition that carries a cool R8 million winners' prize.
Chiefs are the hosts of the second round.
Pirates coach Rudi Krol said: "Though the score is in Chiefs' favour and we'll have to work hard for scoring opportunities, football is very unpredictable and I hope the players are in their best form on Sunday."
As if the pressure of the derby was not enough, the bespectacled Dutchman also had to field questions about alleged interference from the club management in his job.
"I have no comment," he said.
But he added: "It is a different culture here than in other places because the club owners here are also presidents of their clubs."
The Ghost will once again rely on in-form midfielder Isaac Chansa to find the net on Sunday. The Zambian scored against Chiefs in the first leg but said scoring goals should be a shared responsibility.
"We are going there with a positive mind and that is to win the match. Everyone of us can score the goals, not just me," Chansa said.
Amakhosi mentor Vladimir Vermezovic had earlier said the away goal they scored a fortnight ago did not mean they will be defensive.
"The score is not an advantage for us. We must score more than one goal. We are not going to be defensive," he said.
Midfielder Siphiwe Tshabalala said Amakhosi players were feeling the heat ahead of the match.
"We are working hard preparing for the game. There is pressure on us because it's a big game with a lot of history," said Tshabalala.
Source - sowetanlive.co.za