2000 Ford Fairlane Ghia AU V8 Interchangeable Parts?

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My Questions Are: Which Model Vehicles have parts that can be easily interchanged with the 2000 AU Fairlane Ghia V8? Is there a list of parts from the different models that would bolt in to the AU Fairlane Ghia V8 & where can I find such a list? Do the AU XR8 Parts fit in to the AU Fairlane? Where can I buy OEM replacement parts? Where can I buy performance parts?
My internet searches yield very few results.