James Mortimer 29.Jul.2012Getty Images
The Sharks could be on the precipice of not only spoiling the Chiefs party, but winning potentially the most difficult Investec Super Rugby title ever.
If the men from Durban do win, they will have beaten all three Conference leaders in their own backyards.
Rennie told Newstalk ZB the Chiefs travel experience proved that it could be managed.
"We went to Africa played the Cheetahs first up at altitude and went really well, travelled all the way home played the Hurricanes and fronted really well in that game too,” Rennie said.
"So it's about getting the bodies right and getting the head right so attitude is key, I don't believe (it will be) the issue that a lot of people are talking about."
The Sharks have now won five of their ten matches on the road, notably back-to-back recent triumphs in Brisbane and Cape Town, while earlier in the season they broke a historic drought with victory in Canberra.
They have also had success against the Chiefs in New Zealand, beating them for the first time at home in 2001 in Taupo, and then following up those successes with wins at Waikato Stadium in 2003 and 2009.
It is still uncertain whether lock Craig Clarke will be fit for the Super Rugby Final.