I have the fan I removed from my '68. The part number on it is 9790515 with a J70 date code. I'm assuming that is an Oct 1970 date code, but my Pontiac interchange book doesn't list the 9790515 part number.
If someone needs a flex fan in good condition, let me know. $30 + Shipping
Also, I have the shroud that was in the car. The mounting ear on the pass side is gone. There was a crack repair done on the bottom. It worked well. The top mount and driver side mount held it in place. No issues cooling. Free to good home, just pay for shipping.
I know that washing and waxing my car with the present condtion of my paint is like polishing a turd.....but it's my turd and I want it polished!