I know this won't help today, but I had to replace the fan clutch on my 1996 V-10 3500 a number of years ago. What I came up with was the following:
Fan Clutch (ordered from Wrenchead.com) - Comfort Temp # 36700 - $80. 12
Maybe a little bit of Google searching on Comfort Temp (or variants) might come up with something.
Rusty