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Converting the carbureted fuel system on your car or truck over to EFI has never been easier! Holley is excited to introduce our Holley OE style fuel tank modules that are designed as a direct replacement for your factory pick-up and sending unit. Converting the carbureted fuel system on your car or truck over to EFI has never been easier! Holley is excited to introduce our new 1964-1970 Mustang Musclecar EFI Fuel Pump module that are designed as a direct replacement for your factory pick-up and sending unit. There is no need for modifications and you will not have to replace your fuel tank unless you want to. You can even retain the factory fuel hard line just connect the outlet of the pump module to the hard line on your vehicle with some EFI rated fuel hose and hose clamps such as the Earls Vapor Guard. Every Musclecar EFI Module includes a 255 LPH fuel pump and a Holley HydraMat. The amazing HydraMat is a patent-pending fuel reservoir system designed to reduce fuel starvation issues present in hard cornering acceleration stopping inclines and low fuel conditions. This new kit has all of the extra components to fit all three sizes of Mustang fuel tanks from 1964-1970. You choose which fuel gauge float arm for your factory fuel tank size!