Hy AdamK1500, PTO identification has always been a mystery to me, what with all the different companies merging or going out of business. There is a code or system to their numbering at least for some of them, things like torque capability, type of shift, direction of rotation etc.. What I have done in the past is measure the shaft diameter and the housing seal bore and order a seal, some of those seals have been a rather unique shape. I'll see if I can locate some numbers.