Okay...quoted from Doug...
"1st The lower intakes. Yes, we all thought they are the same but they aren't. The late model, 02up I'm guessing maybe 01's, have smaller bolts. 6mm to be excat. They also only have 4 bolts securing the upper intake to the lower where as the previous year models have 6.
2nd The IAT. The 02up Fords have them intigrated into the Mass air meter, its a 6 pin connector. The early styles have a 4 pin mass air and the IAT is in the air tube.
3rd Manifold heater hoses or the hot water bypass will have to be done. The late models don't have this function, the small tubes run around the PCV valve instead of into the back of the TB.
4th EGR valve, forget about it. No way to hook it up no place to. Sorry you CARB and emissions guys, I wish I could tell you different."