Skunk2 Pro Series 02-06 Honda/Acura K20A2/K20A3 Intake Manifold (Race Only) (Black Series)Skunk2s engineers looked to the popular 06 10 Civic Si's RBC intake manifold for inspiration when developing our Pro Series Intake Manifold for K series engines (excluding 06 10 Civic Si) and went back to the drawing board. Each of Skunk2's Pro Series Intake Manifolds for Honda's 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