I have a murry rear engine 30" 8.5 rider and looking for model # is it under swing piece or under seat it self ? It had half a B&S engine when I found it in a forclosed cleanout , I put a 10 Hp tecumseh in it and did a good job ,but now I need a drive belt, I'm going to take the belt to a auto parts store to hopefully find a match. It would be a lot easier to order online but without model number I can't . :confused2: