What Ford engines can I get performance parts for?

I'm thinking or either getting a Bronco or Expedition. I'm wondering which engines from Ford that you could get performance parts for.

-4.6L V8
-5.8L V8
-5.4L V8
-5.0L V8

Which engines have performance parts? I'm looking to increase horsepower, torque, and fuel economy. What parts should I get? What should I do to ensure good power and fuel economy(15 city)?

Any of those engines has performance parts available. Get a 5.4 or 5.8

5.0 would be your best option. That's what's in some of the Mustangs