If you start a new thread on an old topic, you will get criticized for not using the search feature. If you post to an old thread, you will get criticized for not looking at the date. The answer is - well, you did ask a question, the same one apparently in the original post, and both did not get an answer.
I recommend that you get a set of the Mustang Assembly Manuals for your year car. The answer to your question "may" be there. A lot more bits of part's installations are included in those manuals.
Jim