Skunk2 Pro Series 03-05 Nissan 350Z/Infiniti G35 5/8 in. Intake Plenum SpacerSkunk2s revised Nissan Infiniti VQ35 Composite Intake Plenum Spacer V2. 0 is dyno proven and road tested to outperform all other intake manifold plenum spacers. Skunk2s Intake Plenum Spacer V2. 0 features a number of improvements, including a thicker design that increases plenum volume, lowers intake temperatures, and allows the engines front cylinders to breathe more efficiently. All of this results in gains as high as 10 hp, increased throttle