Weird ? about small block pulleys

Dartvader440gt said

I have my set. 6 1/2 crank and 5 1/4 water pump. Hopefully they line up.

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Can you post pictures or the part numbers? If the 5-1/4" w/p pulley is from an A/C application, it won't line up with a stock 6-1/2" single groove crank pulley. Maybe with spacers???