EAR file download in EP 7.3

Hi ,

   we need to do customisation on the masthead application available in portal.  Now as   EP 7.3 no longer supports PAR files we were looking to download an EAR file of the  masthead application . We found the SAP  provded masthead appliction  in th efollowing location . 

Content Administartion --> Portal Content Management --> Portal Content (Tab) > Portal Applications> com.sap.portal.navigation.afp.masthead 

But henceforth we are unable to obtain  the EAR format from this applicaton . Some suggestion will be appreciated .

Thanks ,

       Sidd.