Go with the ZSpeed kit. I've been running the Z1 kit since it came out. I'll be switching out for the ZSpeed kit as soon as I get the balls to drop the transmission in my garage on jack stands over a weekend again.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
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