SB Pulley Help Please

I HAVE a BPE4011 single groove crank pulley that came on a crate engine that I bought. I need the water pump pulley similar to what Joe has posted above (the chrome one). A member has PM'd me with what we think is the correct pulley.

I'm going to buy a singe wire alternator from Summit that comes with the single groove pulley.



Summit Tuff Stuff link

Stay with me guys, we'll get this mess straightened out!