I don't think so. The tunnels I saw were large enough for a small tank, but not tall enough to accomodate a deuce-and-a-half. The tours for civilians didn't allow you to see many of the fighting positions. I did see a couple of very obvious observation posts that would have lasted through the first few seconds of an opening engagement.
It gave me the creeps knowing that we didn't find all of the tunnels and some of them are probably still active to this very day.
You're only young once, but you can be immature forever.