Yes.
Or change to a 240mm flywheel and fit one of these :
http://www.ebay.com/sch/i.html?_odk...+clutch.TRS1&_nkw=nissan+280z+clutch&_sacat=0
Gearbox crunch is the synchro going (or gone) not the clutch.
.....
I would buy a slave and master cylinder together as one often goes after the other new part is fitted. They're also cheaper than a clutch and to fit so try that first if you go down that route. Of course, you could buy and fit it all in one and sleep easier.