When Nissan implemented the VQ35HR engine on the 350Z, they did away with the older slave cylinder setup, and employed a CSC (concentrical slave cylinder) inside the bellhousing. As many have found out, this piece has proven problematic, and prone to breaking. That means dropping the transmission, replacing it with a new one (hundreds of dollars each time) and keeping your fingers crossed. With an aftermarket clutch, the problem only seems to be maginified.
ATS has come up with their multi disk clutch setups that completely does away with the CSC! These are offered in several configurations, ranging from a twin metal disk version that reuses the stock dual mass flywheel, to a triple disk carbon that includes an integrated lightweight flywheel.
These come with your choice of an 1100 kg pressure plate, or 1350 kg pressure plate depending upon your torque requirements. A reinforced NISMO slave cylinder is also offered as an option.
Kwame
Z1 Performance
Jonathan
Corner Balance 
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