I like the fact that you are actually doing your own research and not just blindly listening to what a manufacturer/builder is telling you. Since GTM is doing the work, you could have then test it with one of there 2.5" or 3" systems. That would give you a good indication of what you want without having to take a hit.
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 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
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