"I think we are a different beast to the last time we played them. Last time, we were a new team going into the league."
He said Ngongotaha were an experienced side in this division and would be looking to stay close to the top of the ladder.
"Ngongotaha are an established team in this league. They know each other's game well and rightly so they are pushing for the title," he said.
"On the other hand, for us we are half a season into a three-year plan. We are definitely both at different stages but there is a quiet confidence around United that we can make the game on Saturday an entertaining match."
The Federation Challenge Shield, currently held by United, is also up for grabs this weekend.
The derby is kicking off at 2.45pm tomorrow at Neil Hunt Park.
- Premiership table: Cambridge 28, Ngongotaha 20, Melville United 18, Papamoa 17, Katikati 16, Tauranga Old Blues 16, Waikato Unicol 14, Rotorua United 13, Matamata 13, Otumoetai 9, Tauranga City 8, Tauranga Boys' College 4.