Skunk2 Pro Series Intake Manifold RawSkunk2's engineers went back to the drawing board when they set out to improve the already popular FD2 Type R RBC intake manifold. Each of Skunk2s Pro Series Intake Manifolds for Hondas K series engines feature larger plenums and shorter, oversized runners when compared to the RBC, and are cast with thicker wall material, leaving room for further porting for high horsepower applications. Instead of producing a manifold with a significantly oversized