Hey, it's doable, just complicated. If you can get fake IDs and even fake passports (not that I have any experience with that sort of thing, but people are always managing it in the movies) there probably are rogue locksmiths out there, or a friend of a friend of somebody's cousin's mechanic who (for a price and the potential for blackmailing you after) who'd do it. But then there's still the signature issue, and a bank employee being suspicious because something just seems off...
You could always ask at your bank, after assuring them you're doing this for "research." I'd go with the branch manager, though, rather than a random teller (who just might flag you as a Highly Suspicious Character). I've also heard that the police are helpful with things like this, so if you happen to know an officer, or contact your department's Community Services officer. I know an author who contacted the CIA for info and found them helpful, although knowing that author, she probably already was on their radar *waves to You Know Who You Are*