Latest project after I got P.O.d at CUB letting the pump adapters go NLA for the Cyclops tractors with the Sundstrand pumps was to see if I could come up with a replacement that was also stronger than the OEM part. I called Cub to see if they had any plans on making more of these and the attitude was we could care less you have an obsolete tractor “ have you looked for them on the web” give me a break. Gotta love it I’m not gonna part out a perfectly good tractor over a crappy part like this. Glad I took drafting in school. These engage the whole shaft, the flange is also threaded so you don’t need 3 hands to get everything lined up. Only problem is they will be in the $100 ea. range. I want to get one of them installed and test it before I offer them for sale. I think the test unit will be my 1572 so I can also try out a drive shaft conversion at the same time. The diesel's are hard on drivelines so it seems like the way to go.