1966 big block clutch fan

[Too Many Projects]

Does anyone have a current part number for one of these that actually fits and works ? I've been doing research and keep coming up with a lot of blather and parts that don't fit or function correctly.
Thanks

[Too Many Projects]

I find far better info on Corvette clutches. This replacement seems to be the size I would need. Anyone have knowledge with using this on a Chevelle ?? It appears to be the same one SS396 . com sells for a '66 Chevelle.

https://www.zip-corvette.com/60-70-fan-clutch-replacement-thermostatic.html


Or, there is this original style. I'm not concerned about the appearance, just fit and function, but if this is a better choice, I would go for it.
https://www.zip-corvette.com/65-70-396-427-454-fan-clutch-original-style-thermostatic.html