Paarwater would like his pack of forwards to keep up the momentum they built against the Lions at Newlands last week, when the hosts won 30-8.
He told Die Son newspaper: "We know it won't be easy because they are on a high. But we've played the Bulls enough to know where they are vulnerable.
"And it will once again be a huge test for our forwards.
"I can't be specific in what we have planned, but we have three brilliant loose forwards playing towards the ball.
"They are fast and can all be used as fetchers. And it's in this aspect of the game where we might have the upper hand."
The Bulls need to win their four remaining matches to have a chance of making their third consecutive Super 14 semi-final appearance.