We went and picked up the tractors to day, got home rite before it started raining on us. A few questions, the 800 series I know has an 871 SOS trans but has no pto, the po told me he swaped in the SOS and he gave me the other trans which I never seen one like it. It's a gear shift but has a control valve for the clutch there are no numbers stamped on the flat,( is there any other places they may have stamped it) I'll post a pic of it when it stopes raining