Bad 2.5 in 2007 Subaru Outback

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I am looking for all options for a replacement engine for my son's 2007 outback wagon with a standard EJ- 2.5.  The block is bad, the head are ok.  I know that engines from an outback and legacy work.  If someone can confirm which years exactly and do Impreza 2.5's  or forester 2.5 blocks work?  If so, which years?

 

Thanks in advance.