Description:This High Rise manifold can be used for racing applications or for serious street performance. It has a number of unique features such as a rear water crossover passage, nitrous/injector bosses, and four cornerwater ports. Cool Gap design keeps hot engine oil away from intake runners resulting in a cooler, denser charge for more horsepower, torque, and efficiency. Intake Style: Single plane design Surface Finish: Satin Aluminum,built with natural finish lightweight aluminum of superb quality and fit. Basic Operating RPM Range: From 3,500 to 8,000 RPM Compatible with 1957-95 Small Block Chevy SBC 350 400 Height: 5.390 in. Package Including: 1 X Aluminum intake manifold As Shown in the Picture above.