BBK's new 90mm 5.0L throttle body is CNC machined from a high quality casting to ensure perfect OEM quality and fit every time. Installs in minutes, providing an 8-12 horsepower gain while maintaining OEM drivability and reliability by using factory style electronics and drive motor assembly. This throtle body is a direct replacement but is not simply a bored out factory unit. It's an all new BBK designed 356 aluminum casting that is then fully CNC machined. Detailed installation instructions and 90mm adapter plate are included.