I acquired an old Ariens riding mower with "5-8 Gear" on the hood. The mower has been repainted at least once. I cannot find any other identification on the mower and I've looked everywhere as recommended by the Ariens website. Even though the unit has been siting outside for 2 or 3 years, I managed to get it running. I would now like to order a few parts and manual for it but I need numbers. Does anyone have any idea what Ariens model # this is? Photos are below:Thanks in advance.