Few admins would take that risk, especially on a site this size.The file names are unchanged from your download? What about a script that could be uploaded and run by Admin who could also have a looksee before executing it. It is asking a lot of a forum admin, but never hurts to ask, right?
Hell, if I were the Admin I would only do it if I could run it in a sandbox first, with a team watching the results. Even if successful , on a site this size it would take a day or two of being offline to do the production site.