pto conversion

Hello, looking for help with a possible project. We were advised to convert our spader (Imants SE115RH) with a 540 pto to a 1000 pto. Our tractor (Kubota m5660) doesn't have a creeper gear which means we are spading to fast and not getting the outcome we want. We're hoping that this...

I just bought a used John Deere 850, 1981 model year. It has a transmission PTO. Does anyone know if the PTO on this tractor can be converted to some sort of continuous/independent PTO ?