the 216 water pump arrived but it has the 5/8" pulley so back it goes. I checked and the 18" fan blade I have doesn't fit as the center hole as the fan hole is too small. What size fan blade actually fits on the 216 waterpump center post? Do I order a 216 fan blade for a 1951 or a fan blade for a 1953/54 water pump? Sorry but I'm getting frustrated...

How about a flex fan? It would appear I have to drill out the center hole bigger. I'm not sure drilling into a fan blade that will be spinning fast is a very good idea. Thoughts?