The K-36 has its own control valve as well as the hoses and quick couplers to connect it to the tractor's rear PTO valve. All you need is the Honda engine coupled to the hydraulic pump, a reservoir that will hold at least 6 quarts of oil, some hoses to connect the reservoir to the pump inlet and to a matching pair of quick couplers. The Honda should be more than adequate power because most owners run their CCI tractors at half throttle or less when splitting. You have the advantage of a 2 stage pump that will drop from 11 GPM down to probably 3 GPM once the pressure rises above 600 PSI or so. The Case system does not do that. However, if a Case tractor with a 9 GPM system is run at half throttle (1800 RPM), then it is only putting out 4.5 GPM during the entire splitting operation. In my opinion, Honda has a tendency to underrate the HP of their engines compared to the American engines which seem to slightly exaggerate the peak HP. Personally, I think this is a very good move on your part considering the high cost of rebuilding the Onan in your tractor. No point putting all those hours on it if you can put something like this together. The Case can then be used to haul the split wood in a wagon to wherever you need it.