Pulley Troubles....

I've always used the March aluminum pulleys top & bottom on a MP water pump with both left & right outlet housings from 440source. March may be a little spendy for some but worth every penny especially when the uppers come with special button head allen screws for pump mounting that allow the clearance needed. You also have the option to change lower pulley to speed up or slow down pump. Never had to add shims or spacers.
If you are looking for factory correct, Good luck.