Holy sh**, I was at the auto fair in Charlotte,NC. I've been studying PN's on mustangtek and have got pretty good at it. I know for a fact, I seen these pulleys you guys are talking about for cheap. One vendor I remember had slews of pulleys in milk crates and I was in them for a while looking foe certain ones I was needing. And I came across several of the CJ and SCJ pulleys. I was asking just out of curiosity what his prices were. They were right around the $35-$50 range each. If I knew those crazy pulleys were fetching the kind of money that can be made ($100+), I'd bought the one's he had. I did buy several pulleys for my applications I was looking for, some I plan on flipping. I also found a rebuilt C8SE-8505-E Boss9 date coded water pump and several items for Boss2's. I wished I'd had another day.
With what I know about pulleys now, I will be buying specific ones from now on.
One thing, You just got to get down and dirty and dig thru all the parts.