Did all 69-70 metal fan equipped Zs have a clutch from the factory? I was looking through a box of parts I got as a grab-bag on Ebay (just for the fan) and along with the pulleys is a spacer that matches the fan, but no clutch. The fan has no big hole in the middle where the clutch would go, just a flat area with 4 bolts labeled front and back where the fan bolts to the spacer. Is this a very early fan setup? Thank you in advance...

Kurt, to the best of my knowledge, all of the cars (those sold in the US, at least) had fan clutches. I've never seen one without, and the parts CD shows the same metal fan and clutch numbers for all cars up through 7/71 production.

All the early OEM fans had clutches. In the early '70's you could get aftermarket replacement fans with no clutch, and some owners switched after clutch failures because they cost about $100 less.

And they sound like a DC3 in flight! I had the clutch elimination kit on one of my 510s and it was loud.