G35, FX35 & M35 1/2″ Copper Iso Thermal plenum spacer (with all Iso Thermal components, Aramid Gasket, and the Polarized Copper TB heater) This premium stealth modification adds 12HP-14HP and reduces the effect of power robbing heat soak. This plenum spacer can be used for maximum performance enhancement. It also adds a substantially deeper growl under the hood. Use the copper if it ever snows in your area.

(Due to Carb regulations this item is not sold/shipped to CA-.- No International shipping)