Hotchkis front bar and a set of Koni yellows is what you're looking for.
fwiw Investing in the nut behind the wheel is always going to be a better investment than upgrading the car. It's easy to blame the car when you're just starting out but over time you'll learn more often than not, it's the driver that's the limiting factor.
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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock
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