SKUNK2 ULTRA STREET INTAKE MANIFOLD SILVER MAZDA MX5 NA/NB MIATASKUNK2 Ultra Street Manifold. The Skunk2 Racing high performance intake manifold for the NA and NB Mazda Miata has arrived! Unique two piece modular intake manifold has been designed to be a bolt on replacement for the anemic OEM unit, incorporating a removable plenum lid that allows for easy disassembly, porting, and plenum volume changes through the use of our optional plenum spacers. The Skunk2 Racing Ultra Street Intake Manifold has undergone