SPDZ1 Long Tube Headers - VQ35DE/HR - Nissan 350Z Z33 370z / Infiniti G35 G37 (PRE-ORDER ETA END OF JUNE)SPDZ1 Long Tube Headers VQ35DE HR Nissan 350Z Z33 370z Infiniti G35 G37 The SPDZ1 Performance Long Tube headers for VQ35DE HR are designed to replace your factory header. These long tube headers are constructed with 304 brushed stainless steel and heavy duty flanges. Designed with a stepped primary, these headers are built to retain as much low and mid range torque as possible while allowing for good top end horsepower gains as well. Each header