Joe came out with the internal heavy duty CSC first. Then Z1 came out with the CSC Elimination Kit a few years later, which I do believe was one of the first external slave solutions. But it was complete garbage. I went through 5 slave cylinders in like 30K miles. I put the ZSpeed CMAK in a few years back (~20K miles) and haven't even had to think about it since.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |