Springbok prop Robbie Kempson expects Argentina to target the Bok scrum as a potential Achilles heel in their one-off Test at River Plate Stadium on Sunday.

Kempson, however, says the Bok pack won't be caught napping. "They (the Pumas) pride themselves on their forward play and the scrums are the biggest part of the game where they can disrupt us.

"So they will come at us because we don't have a huge reputation as a scrummaging nation any more. But if we can turn the tables on them we will be set for a good win.

"We have a plan ready for them. We are mostly going to get the ball in and out of the scrum quickly by using the quick channel one ball (through loosehead straight to No 8). We want the ball to be out before they can come with their second shove on our ball.

"Our game plan is about momentum and the only way to get momentum going is to get the ball out as quickly as possible," Kempson said.

He doesn't expect the Pumas to divert much from the tactics their A side successfully used against the Bok midweek team on Wednesday night.

"They rely a lot on the second shove and catch you off-guard when you expect it the least. We on Wednesday got a good first hit in against them, but as soon as we relaxed they came with their powerful second shove and that put a lot of pressure on us.

"We were disrupted, but I think the guys came back well in the second half and they got in a few good ones," Kempson said," after a Bok scrummaging session under the watchful eye of assistant coach Andre Markgraaff and adviser Ian McIntosh

Kempson believes it is essential the Boks take the right attitude on to the field on Sunday. "Scrummaging comes down to attitude and mental preparation. What you put in is what you get out," he said.

"As Andre Markgraaff pointed out on numerous occasions this week, we're not going in for survival, but to make an impact. And the guys are really focused to do well."

As a keen student of the game Kempson knows a lot about scrummaging. On Saturday former Natal Sharks teammate Federico Mendez is on the other side of the fence. It was Mendez who in 1997 let Kempson in on the techniques the Pumas use in their bajada scrum.

"It revolves around breathing and teamwork. The timing for the second shove when the opposition pack relaxes must also be perfect.

"The rugby players here are brought up with the technique, so it's almost like second nature to them," he said.