I used SPC on my G35 for 4yrs and jus installed front and rears on my Z. They may b a lil more expensive but historically hav proven 2b durable and reliable.
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2012 Z-SOLD
2014 Nismo #565 Fast Intentions CBE/HFC/Swift/SPC/RJM/H&R-15/20mm/Z1 CAI/Headers/Intake Manifold w/Uprev Tune 328.31whp/263.64tq
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