i was in the same boat as you. i brought my GTR over from Sydney and took it over Warwick pits 2 weeks ago - i recommend taking it there!
mines got cams and also fully adjustable ohlins coil-overs, idle is fairly lumpy and the coil-overs are @ above legal height, this didn't concern them at all. mine's setup for 500hp+ but the engine bay looks fairly stock like yours which is a plus, just clean everything make sure theres no oil or coolant leaks, degrease the engine bay and under the car, make sure EVERYTHING works electrically.
also while your there get them to give u permits, i just did the bits you can see like exhaust, my massive FMIC and the adjustable fuel pressure reg, hide any boost controllers and boost gauges.
any questions just pm me