I would see if I could get parts 1st. If someone made it for Gehl see if you can cross reference the parts. If it is a Gehl made machine, probably want to look at something different. Gehl no longer makes AG machinery and does not support it. A friend of mine bought a Gehl forage chopper brand new right before it was known they were getting out of the ag. Had something fail in it and had to buy a whole new chopper because he could not fix his. His couldn't have been more than 3-4 years old at the most.
I don't know what failed, I only asked him because his was parked in the weeds and he now has a New Holland. That was at least 3-4 years ago. I think it was 2006 or 7 that Gehl stopped with the farm machinery.