Hi, I have a murray wide body that the drive belt needs replaced, I acquired the mower second hand and unfortunately the serial plate under the seat is missing. It has a 40 in deck, and 14.5 hp briggs and stratton deck. I believe its a 98 model from what Ive seen on others thats when murray used the 14.5 engine. Can anyone help me with the model number or maybe with the belt size from this info that I have? Id really appreciate any feedback!