Hydrostatic Steering control unit

[kindyfarmer]

I have a 1992 Ford model 1920 tractor and the steering control unit part number SBA334000190 at the bottom of the steering wheel is leaking oil profusely. It had been rebuilt by the previous owner and still leaks. I am looking for a replacement and am trying to save some money by looking for a non factory replacement. anyone know of a company that makes replacement parts for these.