Holley Sniper EFI 12-319 In-Tank Electric Fuel Pump 63-76 Mopar A-Body. Holley Sniper EFI 12-319 In-Tank Electric Fuel Pump 63-76 Mopar/Dodge A-Body. Holley includes a HydraMat with its unique internal reservoir to keep fuel available at the pick-up, while also providing protection from contaminates.