proper replacement part for fan clutch to 216 fan.

Hey gang..
I tried a search, but could find the answer to my question; is there a proper replacement fan clutch on the market with the proper shaft length? I am working with a '69 B-body, 426 Hemi with 054 radiator. I know it has probably been talked about countless times...
The one I have is 3.25 inches from front face to the mating surface to the pulley.... What should it be?

Thanks...
T

Did some more diggin'.. Looks like I need the Hayden #2765 clutch...

The one I have and it is way too close it 3.25", the Hayden is:

Overall Height (In): 2.670 Inch

So, I have one on order from the local parts store. At this time, no need for a 070 OEM reproduction version..