The Edelbrock has designed part # 15400 UNIVERSAL supercharger system for street rods and muscle cars with Gen IV GM LS3/L92 engines with RECTANGULAR port cylinder heads. The part # 15400 comes with a Corvette Offset. Edelbrock supercharger systems are designed to deliver maximum low end torque and great drivability. Edelbrock E-Force systems are designed to provide instant and reliable horsepower with low boost for minimum stress on the engine. Its compact design fits under the stock hood on most applications and complements the clean look of any engine compartment. These systems require the use of a universal heat exchanger. System part # 15400 does NOT include handheld tuner. Call for custom configurations. Supercharger systems without tuners are not eligible for supplemental warranty. Supercharger systems sold without tuners are only emissions legal when used with the correct Edelbrock program, which can be downloaded at www.edelbrock.com.