SKUNK2 ULTRA SERIES STREET INTAKE MANIFOLD HONDA K-SERIES K20AThe much anticipated Ultra "Street" Intake Manifold for the '02 '05 Civic Si and '02 '06 RSX RSX Type S, and or any swa The Ultra Series is years of research and development, culminated in a multi piece cast aluminum intake manifold that offers advantages that only a modular design could allow. Using the latest in CFD (Computational Fluid Dynamics) software; Skunk2 Racing has created a two piece modular design that allows for easy disassembly,