Yes, it can be done.... As long as you have the engine block that has the welch type plug below the oil filter. You need to remove that and change the oil pump drive shaft/gear with one for an x600 series engine. Then you need an instrument cluster and tach cable for a 36/4600 tractor. One of the earlier one from before 1979 IIRC....
If you do that then you shouldn't need to change the senders for the temp gauge and fuel.
Then you just add a run of the mill Delco 10si alternator. Make/modify the brackets and get a fan belt that's about 1" longer.
You can also buy the Tisco conversion kit for those tractors that uses a Delco 10si alternator that THEY have modified with a special rotor that has a tach drive. This will allow you to retain your original instruments. That may be cheaper than the alternative.
I've always looked at it this way... if you need new instruments, upgrade the instruments and use the cheap basic alternator. If the instruments are good and you want to keep it as original as possible... get the Tisco kit. That will probably be cheaper IF the instruments are good.
The last one I did... I used the Tisco kit... but it was a '66 and I still need new instruments anyway. It's just that the '66 engine can't drive a tach.
Otherwise I'd have upgraded. I MUCH prefer the lifetime alt from NAPA that I can drop on the counter when it craps out... and get another for free. If the Tisco kit craps out... you get to search for a rebuilder... and don't bugger the rotor in the alt.