BBK Utilizes over fifteen years of EFI only experience and developed this manifold. The lower manifold features an open runner design for cooler intake air mixture, identical runner shapes for equal distribution, 75mm throttle body opening, and high torque twin plenums for maximum performance. The upper intake manifold has a durable titanium powder coat finish which will look great on your Mustang. It comes with BBK anodized aluminum high flow fuel rails, a BBK 70mm throttle body and is the only 5.0L manifold to offer identical open runner design for better balance, cooler induction mixture, and maximum performance. The kit includes upper and lower manifolds, has a built in EGR mount so you don't have buy an EGR spacer. It also includes all necessary hardware and gaskets. Application: 1986-1993 Ford Mustang 5.0L