Theme Hook Suggestion for Drupal 5 I wonder if any still remember how to override a particular node in Drupal 5 ? I have tried out several ways but didn't work. Couldn't find such info any more on google.

node-13.tpl.php

node--13.tpl.php
In Drupal 5 you need to add the suggestion yourself by placing this function in your theme's template.php:

function _phptemplate_variables($hook, $vars = array()) {
  switch ($hook) {
    case 'node':
      $vars['template_files'] = array('node-'. $vars['nid']);
      break;
  }
  return $vars;
}


Once that's done you'll be able to use node-13.tpl.php (note the single dash).

Source: Separate node template for a specific node.