Ok, my motor is totally screwed so I am buying a 00 PI 4.6. Now as far as I know its a direct swap so it should be pretty easy but we all know that nothing ever goes as planned when doing something to your car. I know alot of you guys have done this and I was just needing some major advice. I have never done anything to my bird this extensive. I was under the impression that everything bolts right up including the wiring harness. Now as far as a chip goes, will I need to change my computer to a mustang computer or have my chip reburned or both? Also, headers....I assume I need lose my stock 96 manifolds and use an aftermarket system such as JBAs. I am really needing some big advice here so I really appreciate any help.