Sometimes the noise will travel and be in a totally different area than where it came from.

Oil weight? What are you using? Does make a tapping noise on start up? And get better when it warms up?

Only when it starts up? or Constant

Tomorrow when it's cold disconnect the air pump harness (Air pump is right under the Alt. Harness can disconects at top). Then start the car. If there is no noise then you are hearing the air pump bearing going south. If you still hear noise then proceed to look elsewhere.

You haven't answered my other questions so I can't help you any further right now. Did you pry against the shock or are you unable to find it?!?!?