On another note, isn't the gearbox the same aisin 6 speed that is found in s15's or is it a lower spec version of it? I was putting 415nm through my s15 and the box handled it fine. Edit You should speak to sau member mini wog i think it is who has been running a turbo'd 86 for a while now. Not sure if its still original standard box, i think it is. He recently inreased boost and power to around 220rwkw, runs r specs and frequently tracks the car, seems to handle it well.