I purchased this and it fits very well & will report how it functions when I lite off and run the motor and car. This is used with a Factory Solid Lifter Fan. While the replacement lacks the appearance of the GM Clutch, it should fit the bill as an economical temporary replacement for those seeking the rare orig clutch.
Link
https://www.ebay.com/itm/35195350436...Bk9SR461moGVYQ