unknown engine

just got done cleaning the engine I pulled out of my f 250 and dont know what it really is told it was a 351 windsor but things are not matching up the block numbers are e9ae-6015-aa-13 / 9e15 any help thank you

This is what i came up with

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This is how I read your numbers:
E9 - 1989
A - Application code - Full size sedan
E - Engine 351w
6015 - Part Identifier - Engine block
AA - Revision code

Thanks that helps out alot