We had a great luck with the factory slave cylinder so far, But if would not be a bad idea to upgrade it while you are there.

Sam

^The way I understand it, the upgraded hydraulics are a fix when a heavy aftermarket pressure-plate is used, no?

If you stay with the OEM, then you can use the OEM slave and expect un-changed durability. If it would die OEM, it will die with your TT setup, as it doesn't see any change in force as long as you stay OEM on the clutch.

From what I am understanding you to say, Sam, is that the OEM clutch will handle all the power of the TT setup, it will just wear faster than aftermarket when you subject it to a lot of slip/high-rpm launches, etc.

Did I miss the boat?

How about the transmissions/rear-ends on these cars? I know the manuals sometimes have syncro issues, but that would be un-related to power and more related to whether you got a lemon or not from Nissan, right? Syncro's don't see tq, just rpm and rotating assy. mass if I am not mistaken.

So from what I gather, you should get the same life out of your OEM clutch with a TT setup as with a OEM engine, if you don't drop the clutch all the time. The reason I say that I see it this way, is that if the clutch will hold 450whp, then it's not slipping at 7,000rpm. If it's not slipping, no wear is occuring. The only time it slips is at launch for the most part. If you don't beat the hell out of it on DR's/slicks, the OEM width street-tires will give up way before the clutch does. So, using this logic, you are telling me the OEM clutch is just fine on a 450whp 370Z, correct?