Yes it can be done and it's worthwhile doing if your tractor is a good one. Every now and then, I see a complete kit for sale on e-Bay. Savvy Sellers who part out Case tractors know that some folks want to make this upgrade so they set aside all the needed parts and offer the whole shebang for less than $100.00.
You should take a peek under your tractor to see if it left the factory with a single spool valve or the double spool valve. Some did, some did not. To do this conversion, the engine needs to come out because you have to get in there to install the lever and linkage. So does the battery and hydraulic tank. This is a good time to pressure wash all that crap that's lurking in that area, do a hydraulic oil change and install a new spider in the LoveJoy coupler.
You should take a peek under your tractor to see if it left the factory with a single spool valve or the double spool valve. Some did, some did not. To do this conversion, the engine needs to come out because you have to get in there to install the lever and linkage. So does the battery and hydraulic tank. This is a good time to pressure wash all that crap that's lurking in that area, do a hydraulic oil change and install a new spider in the LoveJoy coupler.