You don't want to change those, you just need to add the $order->products[$i]['id'] to the display around line 171 ...
Put the file back to how it was and try this change to see the products_id show ...
PHP Code:' <td class="dataTableContent" valign="top" align="right">' . 'ID# ' . $order->products[$i]['id'] . $order->products[$i]['qty'] . ' x</td>' . "\n" .



