"Seak and ye shall find".
There is already existing a Ford billet water pump pulley to use with the "Ford Racing 'short' water pumps".
https://www.cvfracing.com/shor...656&gad_source=1
It is too early to determine if this is the exact pulley offset to use once the nose of the pump is cut back, but the preliminary analyzation seems to indicate that it is?
@ Marlin: look at the countersunk bolt holes! Kool or what?