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loosen all the bolts on t-cover,install damper,torque t-cover down,install oil pan gasket/pan and torque it down. it should seal up with that slight mix match after t-cover is centerd.
2 hole gasket looks like air pump gaske maybe??
the thick cork gasket and the thin metal core gasket are for the 90* oil filet adaptor.
FYI, on some fel pro kits it will have a outer gasket with 3 fingers holding the small center bolt gasket for the 90* adaptor. this hold the outer ring in place,then the thick cork gasket between the block/adaptor, with the metal core washer gasket between the bolt and adaptor on the outside under the big bolt head.
some felpro kits will have just the large outer ring for the flat oil fliter plate. which only uses the 1 large outer gasket and the nipple goes metal to metal holding the plate to the block. And it will have those 2 gasket in your pic to be used with the single outer gasket if adaptor is needed.
so the gasket kits cover either oil filter mounting needs.
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