[Hicktick]

The problem with running water is rust . Its hard to get enough rust inhibitor in your system. If you drive your car a lot , no problem .

If your car sits for any length of time rust will form and clog your new radiator and your block. These blocks have had enough rusting in 80 years.

In my opinion good antifreeze will be your friend and it too needs to be changed every 2 years.

Good antifreeze was not available for the A , but now you have a choice .
Dont ruin a good clean cooling system with water , radiator work is not cheap and a stopped up block will kill your cylinders .