Alternator Pulley?

I bought a rebuilt 3G alternator awile back and now that summer is here, I'm running AC a bit more and my charging is decreasing. Well, when I bought it, it came with an underdrive pulley and I'd like to swap over to a 94-95 stock pulley. Can someone please provide me with a side to side measurement of their stock pulley and a part # from it? I looked it up on motorcraft and the part # they give is GP-712 but I just want to verify.

Also, if anyone wants to sell me a stock pulley from a 3G, please pm me. I've been looking for one for awile. Have cash waiting. :D
 
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