Water pump pulley

I don’t think u will find a stock 1 smaller than 6 inches. U could try a bigger crank pulley. Kim
I may end up going that route if I can’t find one. I’m pretty much maxed out on space already though. My current water pump pulley is a March 6.2” and crank pulley is two groove with the outer being 7.25” and the inner a little smaller. If both sheaves on the crank were 7.25, it would contact the w/p pulley.