stand alone EFI for gen3 hemis

The whole harness thing is why im leaning toward EFI source. He says his harnesses use plug into all factory sensors including the factory map sensor. Everything is there to run all the factory sensors including knock sensors when im ready to cross that bridge. Then ist setup for GM TPS and Magnum IAC motor in F+B throttle body which has cable on the right side unlike a FAST or LS setup.