We just acquired a 1965 LeMans a few weeks ago.
It has factory AC and the factory 7-blade fan and clutch. And about fifteen more options.....
Anyway, I noticed that the fan blade had squared-off notches at the outer end of each blade.
Got looking a little closer and the notches are needed to clear the bolt on the end of the power steering pump shaft that retains the pulley.
I'm pretty sure that you've upgraded to the newer-style pump, so this might not be an issue on your build, but I wanted you to be aware of it.
Here's a thread on another board showing what I'm talking about
:
https://www.gtoforum.com/threads/196...ptions.141672/