Improve street and towing perform-ance with Edelbrock's complete bolt-on E-Force supercharger system, now for 2007-2012 Chevrolet/GMC trucks equipped with 5.3- or 6.2-liter engines. The intake features 12-inch-long runners for maximum low-end torque and an integrated bypass valve that helps reduce parasitic loss under light throttle for potentially improved gas mileage. The kit has an air-to-water intercooler, full-face low-temperature heat exchanger, and flash tuner to properly tune the factory ECU. Pricing: $6600-$7000.