Found my dads original 1971 duster!

70SwingerGuy said
In my 70 Dart, the clutch fan is aprox 3/4" from the rad, and the closest part of the fan blade is about 1 1/8" and I have no problems

Thanks. Mine won’t even fit. Not even close, with pulley on the shaft.
The only explanation is if the new water pump housing sticks out farther than the original factory one. Because I have original rad and clutch fan. This is the water pump the engine builder used