No, I haven't actually measured this with an instrument, but trust me it is very close. When I changed my steering rack bushings, the clamps nearly touched the engine. At the same time i upgraded my front sway bar to 25mm and it hit the oil pump. I spoke to MSA about this and they said I should replace my engine mounts as the old ones will have sagged over the years. I did this and everything clears but not by much.
If you lower the crossmember and steering rack by the same amount as your engine you will be ok. As for the sway bar, that can be lowered a little bit too but best to take measurements on your own car as the 240Z sway bars were thinner than the 260Z bars. Good luck