List of Donor parts for EFI Conversion: Should you have a donor car that you are going to get your parts from or are getting your parts from a wrecking yard, the following list is some of the parts that you will need for you EFI conversion: Engine assembly Transmission Bell housing, if manual transmission Intake manifold assembly… Injectors Fuel rail Fuel rail adapters, metal tubes that go down by oil pan Throttle body TP sensor Air bypass valve ECT sensor ACT sensor EGR spacer EGR valve & sensor Heater hose tube Air intake hose Mass air flow sensor Barometric pressure sensor Oxygen sensors EGR valve solenoid Computer (PCM) Accelerator pedal Accelerator cable Inertia switch & connector TFI distributor Ignition coil Fuel filter bracket Starter solenoid Valve covers If you consider running the serpentine belt system, you will need all of the accessories, air conditioning compressor, power steering pump, alternator and maybe the smog pump and their brackets. You will also need the water pump and its pulley. Don’t forget that the late model Mustangs run a reverse rotation water pump.