Small diameter SBM water pump pulley

dano said
CVF Make a larger diameter crank pulley if that is an option? But its 2V.

69-down and 70- up Water pump pulleys are different as are B/RB..

That is where the problem lies.
I trying to run an aluminum 3 groove I got from March on a pre 70 setup.
I think I can make it work with some tweeking.
I need to overdrive the water pump for the A/C.