Water pump to radiator space?

Can you all provide the distance from the tip of your water pump to the face of your radiator?
How much room do you have for fan/s?
I am looking for original small block cars.
Please include what kind of radiator you have and year of car.
Thanks

I have a 68 Dart GTS 340 with a brand new direct fit Cold Case Radiator. I have 4 inches from the fan mounting surface on the water pump to the face of the radiator. Once I mounted the fan and clutch assembly I have about 7/8 of an inch from the clutch face to the radiator face