Ford: 2005 ford mustang GT

Question
QUESTION: There is a loud tapping noise from the engine. It's constant and goes with entire rpm range. Is the typical?

ANSWER: yes, unfortunatley this is typical. if aftermarket oil filters have been used at all, particles break apart and block the main feed port in the right cylinder head, over time, the rollers in the rockers wear and hence your noise. i'm sure this is not the answer you were looking for. sorry but i dont' lie to people

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QUESTION: What can be done about it?

Answer
replacing the rockers and lifters is going to be the only repair. i know the sound can be annoying but, you'll probably get more miles out of it than you would think and the noise will remain the same if you use a quality oil and only motorcraft filters from here on out