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While you're at it, shop around for power-adders. At the time of this article, searches for both Whipple and Kenne Bell superchargers turned up no results. A search for Eaton superchargers did, however, which makes sense given that most factory-supercharged cars—Mustang Cobras, Lightning pickups, Thunderbird Supercoupes, and Pontiac Bonneville SSEs—came with Eaton superchargers. As owners upgrade in search of more power, you can often find these superchargers for sale at good prices. The Eaton M112 was standard equipment on '03 to '04 Mustang Cobras and '99 to '03 Lightning pickups. Note the different air inlet arrangement for each application. Air enters through the back in most applications, but from the top in the Lightning, and through a U-shaped bend in the case of the Cobra, where hood clearance was an issue. Each supercharger fits in a specific base because the intake ports on the Cobra's DOHC cylinder heads are shaped differently than the SOHC heads on the Lightning.