6 blade fan for 35 Ford?

[bullrunmotor]

I was sorting thru some 35-36 style generators-the style where the fan mounts on the end of the generator. I found one with a 6 blade fan still bolted up-like what you see on a center mount setup-like a 40. Did any 35/36 use the 6 blade fan? Maybe trucks? I'm taking it apart today-but it sure looks like it will bolt up with no modification and might swap out with the 4 blade fan. Thanks in advance