Edelbrock Supercharger Universal - GM Gen IV Block LS3/L92 Rectangular Port Heads Corvette BeltEdelbrock Universal Supercharger System #15400 is for street rods and muscle cars with Gen IV GM LS3 L92 engines with RECTANGULAR port cylinder heads. This supercharger comes with a Corvette offset and is designed to deliver maximum low end torque and great drivability. Edelbrock 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