BBK Performance Parts - 1986-1993 Ford Mustang - SSI-R Intake Manifold - 5.0L (Charcoal) Utilizing over fifteen years of EFI experience, BBK engineers designed and developed this revolutionary SSI-R Ford Mustang EFI intake manifold for high RPM performance and maximum horsepower. This BBK SSI-R Intake manifold is re-writing the chapter on Mustang performance – with a lower manifold that features an open runner design for cooler intake air mixture and easy adaptation for Nitrous injection, 80mm throttle body opening, maximum street / Track performance. All BBK SSI Mustang Performance Intake manifolds include anodized high flow billet aluminum fuel rails and a durable Silver powder coat finish. The new BBK SSI-R Series Manifold sends the competition back to the drawing board. Try 25-30 more Horsepower over Stock and 19 more horsepower over the already successful BBK SSI dual plenum street intake manifold at 5000 RPM.