Contact me when you get close to doing the job. I'll give you a contact for a clutch guy who many of the big companies use and then they double his price to you. I have used him before and found him quite reasonable and very accomodating. He also has the needed bearings at reasonable cost, and he looks for quality parts.
When you do the clutch, check the starter ring gear very carefully for damaged or missing teeth. The 4 cylinder engine usually stops against compression in only 2 places on the ring gear, 180 deg apart. I have had to replace ring gears along with clutches, and have 1 or 2 N tractors sitting now needing clutches and ring gears, plus an IH 300 needing the same thing. My barn is just too cold for me to work on them now. I covet your shop!
Merry Christmas to both of you.
Paul in MN