Add rss2_item action hook

Hello, is it possible to have the action hook “rss2_item” in the feed template? Just in case we need to have some elements like media content added to the feed, I tried to put it just after the “rss_enclosure();” part in the google-news-feed.php file and it worked fine, so just this part:

<?php do_action( ‘rss2_item’ ); ?>

Thanks!