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

How bout the heavy duty cooling system and the sledgehammer to the passenger's side shock tower?

Other than a stock A-Body BB radiator, aluminum seven blade fan and clutch drive, eight blade water pump and no shroud, and probably no thermostat, was there anything else to make the cooling system special other than no shroud mounted?
And as for the clutch drive, it was torque driven, not thermostatic run... was this special to this fan unit and engine?
Just curious to get this right...