got a part number? This is what I heard too but can't find one smaller than mine, it was a V8 pulley I used to replace the old stock pulley with, and they are the same diameter. I can find BIGGER all day long.
I got it from Orange County Truck and Car shop in CA. SO their part number may be different from other places. This is a double groove chrome pulley that cost me $20. Here's their part number: 60-14210
Link to catalog:
https://issuu.com/truckandcarshop/docs/ts_60-72_webPage 96 on the catalog.