yup i suppose that you have a 50/50 chance. sounds shitty i know. pull the valve cover and check all of the rockers to see if any are very loose like ready to come out. if it were me id just buy a belt and try it to see if it worked. if not then all you have done is spent money on a timing belt and wasted about 2 hours in labor installing it. hell its just a thought. nothing like hearing from the person you sold the car to and having him tell you "man i just put a timing belt on it and i have been driving it for a few weeks"

good luck on your choice