As Brett said. Also, good luck getting one. A fellow member has had one on order since June I think. Delay, delay, delay. I just got a lengthy email back from PPG. Gonna call him on Monday and organise to fly down to Adelaide and drive the different boxes. He said that the helical, synchro set will do the job but really is pushing the dog set. He owns a GTR with that box in it. Been in the car for 6 years/40,000 kms and its all sweet.