What PARTS did Hurst and Chrysler put in the Super Stock Barracuda & Dart not in other factory cars

I’ve been collecting parts to build a clone and just got this NOS fan, 2585376. It was supposed to have been hanging on the wall in an old dealership. Now I need a 070 clutch.

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Nice find. Do you know the part number for the clutch in case anyone could help with locating one? Or is 070 the number?