I have plenty of experiance at changing oil, I work at an oil change facility. Goto your local oil change place, and they'll put in an oversize plug if possible. Probably a ford plug of some sort. Its quite common. A toggle plug(butterfly) is only for a last resort. They do ok....if you have nothing else, it sure does beat replacing the oil pan.
The oil change shop will charge you a few bucks for the plug, and if they pull a vaccum on the motor, you won't loose any oil. If your gonna do it yourself, just bring your plug in, and tell them you want an oversize plug that'll work. If it doesn't work, get a toggle plug.