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I have an '86 s10 w/2.8 tbi. I want to use the engine as a donor for an '84 w/2.8 carb. The newer engine requires an electric fuel pump. Any ideas on plumbing the pump into the mechanical lines? The mechanical pump has a return line to the fuel tank. Can I use the in-tank high pressure pump and tee in a fuel pressure regulator to return the fuel to the tank?