Alter Node Reference Autocomplete Output

OK. So I figured out how to do part of what I wanted to do by hacking the node reference module for CCK. My code is below. This method works but if there is a better way to do this I am all for it. I have commented where I made changes.

If possible I would prefer a method that loads the information from the selected user node in a seperate section on the page (automagically using ajax?). I will have a couple of users that have the same but are name at two different locations. The idea behind this functionality is to verify that the correct user is selected at the appropriate location. Any help is appreciated.

// Starting @ line 854 in nodereference.module ///////////////////////

  $where_clause = $where ? 'WHERE ('. implode(') AND (', $where) .')' : '';
  $sql = db_rewrite_sql("SELECT n.nid, n.title AS node_title, n.type AS node_type FROM {node} n $where_clause ORDER BY n.title, n.type");
  $result = $limit ? db_query_range($sql, $args, 0, $limit) : db_query($sql, $args);
  $references = array();
  while ($node = db_fetch_object($result)) {
 
// Begin my code ///////////////////
// Load node for user.  Get nid for Location node.  Load Location node. Get title of Location node. ///////////////////////


    $item_node = node_load($node->nid);
    $item_node = $item_node->field_location[0]['nid'];
    $item_node = node_load($item_node);
    $item_node = $item_node->title;

// End my code //////////////////


    $references[$node->nid] = array(
      'title' => $node->node_title,
      'rendered' => $node->node_title." (".$item_node.")", // Modify the title output for the results. /////////////////
    );
  }

  return $references;
}

/**
 * Menu callback; Retrieve a pipe delimited string of autocomplete suggestions for existing users
 */
function nodereference_autocomplete($field_name, $string = '') {
  $fields = content_fields();
  $field = $fields[$field_name];
  $match = isset($field['widget']['autocomplete_match']) ? $field['widget']['autocomplete_match'] : 'contains';
  $matches = array();

  $references = _nodereference_potential_references($field, $string, $match, array(), 10);
  foreach ($references as $id => $row) {

// More custom code. Same idea as above but doesn't work. Gives "No posts with that title found." ///////////////////

  	$item = node_load($id);
  	$item_node = $item->field_location[0]['nid'];
  	$item_node = node_load($item_node);
  	$item_node = $item_node->title;

// End custom code that is functional but didn't work. //////////////////////////
  	
    // Add a class wrapper for a few required CSS overrides.
    // Modify output of selected result. This didn't work! ///////////////////////////////////
    $matches[$row['title'] . " (".$item_node.")"] = '<div class="reference-autocomplete">'. $row['rendered'] . '</div>'; 

  }
  drupal_json($matches);
}