It is possible. You need to create a faucetbox folder in the root directory of wordpress (the same height as /includes folder exists). Then you need to create a template file (1) and put it into the folder of your theme. Put the code of the index.php file of faucetbox into that template and delete index.php from faucetbox. Then you need to include the faucetbox folder link into the template file (at the start of the file). Use the WP routing (2). Finally, you need to create a page into Wordpress admin panel and use the template file as base template.