The water pump pulley is ~ 5.75" and the crank pulley is ~7". I did notice that the bracket I had made for the alternator needs to be redesigned to lower it. This will give more wrap of the belt on the water pump pulley. I am not comfortable with the amount of force it takes to turn the pulley by hand with the belt tight.
Side note, when I was looking things over, I see the vacuum advance hose was cracked right at the nipple of the can. Another issue. I know it was good before I left.