For the quality, go with the fast intentions or the motordyne. Fast intentions has the build in "L" shaped extension bungs to take care of the check engine light. Otherwise you might want to get one of those.
http://www.z1motorsports.com/g37_370...oducts_id=3736
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09 PW 370z Nismo | K&N Drop Ins | HKS Hi Power | Berk HFCs | Work Meister S1 3P | Project Kics R40 Neo Chrome Lug Nuts | KW V1 | SPC rear camber arms/toe bolts | Southbend Stage 3 daily clutch | Southband 19Ib Steel Flywheel | ZSpeed CSC
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