This is a work in progress please correct me where I am wrong. I hope people are willing to help with pictures and documentation. Many people have asked about this, but the conversation always dead ends, or someone says they did it, but will not say how. Tightening emissions standards and rising fuel prices have made this a priority for me. You could just get a 4.6 to address emissions issues, but I personalty do not like the 4.6 because all of its power is made higher in the rpm band. I like being thrown hard into my seat. I am yet to see a 4.6 do that naturally aspirated. A magazine did a OBD 2 coil on plug 5.0 a long time ago, but would not say how. Time to stat the parts list. Mechanical parts? 302 or 351 engine with EFI intake 302 or 351 Camshaft Synchronizer with gear for roller cam 1994/95 K member High Flow Catalytic Converters 351w swap headers ? Engine swap oil pans ? Electronic parts? EGR valve Coil on plug 99 to 2004 Mustang GT Wire harness Coil on plug units Mass air flow sensor Coolant temp sensor Idle air control valve O2 sensors Injectors 1999 4.6 Mustang computer for manual transmission A local part store had the same part number for all 4.6 mustangs 1996 to 1999 SOHC and DOHC. Researching EGR valve and dpfe sensor setup.