Where is the fuel filter and how do I replace it?

Here is a guide that will help with performing this repair. It is on a different vehicle but gives good detail that you would need.

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

Plus here is a video on an earlier build Mustang that will help as well:

https://www.youtube.com/watch?v=hVHhgLCxhl8

Below is the process from the manual that will help with additional details. Please run through this material and let us know if you have other questions. Thanks