Fan upgrade question
I second getting a factory shroud and factory thermostatic clutch fan. I have always had excellent results with this. Plus, with a clutch fan, it is essentially impossible to sling a fan blade off at high rpm.
Rock auto has a varitey of blades for the clutch so you can probably find a good size.
Also like mentioned, summit racing has fan blades for clutch type:
http://www.summitracing.com/search/...rt-type/fans-mechanical/diameter-in/17-000-in
What I would do is get the fan blade and shroud from a junk yard and get the clutch new.