You don't need the helper spring assembly at all. I removed the one on my old 370 and never looked back. Feel free to spend money and purchase the RJM clutch pedal assembly if it will make you feel better, but I doubt that you really need it.
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 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
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