Sorry but in my opinion the alternator mounting bracket gasket is not a DIY.
A lot of stuff had to come out and I didn't go there. I had it done. $810.00
My indy showed me what was involved. I saw what the work was and said no thanks.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….