Clutch fan

Greetings;

Looking for information on what kind of clutch fan came on the 1972 340 Demons? Non A/C car. Did they come with the thermal control drive or did they come with the torque control drive? Looks like there were two different size of thermal drives one is 7 1/4" diameter and another one that is 6" in diameter. I would think that the 340's had the 7 1/4" one?
Thanks for taking the time.