The perfect match! GReddy RX Throttle Kit & GReddy RX Intake Manifold...  As the graphs show, the RX Intake Manifold adds a lot of mid-to high end power, with at a slight compromise at the low-end.  But with the addition of the larger RX Throttle Bodies, the low end power is restored and even more mid and high end power.

Dyno from GReddy Turbocharged GR4.3 long block (same High boost setting)

Blue - OEM Intake Manifold & Throttle Bodies
Green - GReddy RX Intake Manifold with OEM Throttle Bodies
Red - GReddy RX Intake Manifold and RX Throttle Bodies

The GReddy RX Throttle Kit was developed to take advantage of high volume turbo kits used with the GReddy RX Intake Manifold for high horsepower GT-Rs.

• LH and RH set of Billet CNC Throttle bodies for VR engine.
• The system uses the factory electronic throttle motors in it's precision machined gears
• 13% Larger butterfly valve - RX 68mm (OEM 60mm)
• Maximum precision machined venturi inner-opening for smooth air flow (not stepped)
• 80mm outer-diameter inlet and 70mm inner-diameter outlet to intake manifold.