SpeedFactory Racing K-Series Sidewinder Turbo Manifold - T4 Divided - Twin 44/46mm Wastegate - SF-04-055-2CURRENT ESTIMATED MANIFOLD MANUFACTURING TIME IS 7 8 WEEKS. The SpeedFactory Racing K Series Sidewinder Turbo Manifold was designed to spool medium to large sized turbos very quickly, producing broad powerbands that carry to the top of the RPM range. This manifold is for applications where large torque and great spool are necessary alongside big top end horsepower, making it suitable for road race and drag race vehicles. Our Sidewinder is constructed