Well, I got a "new" alternator from Ed. It arrived yesterday (man that guy is a class act!
Tonight I spun it by hand and it was more noisey than the one on the car. It didn't feel as smooth either. But, since I had it, I swapped it in anway.
Sure enough...got it all installed. Started up the car and the noise was still present. No louder, no worse. So, now I'm back to square one. I either got another dud alternator (what is really the liklihood of that?), or I don't know how to troubleshoot this. Maybe it'* common for these alternators to be a little whiney and I'm attributing this noise to the alternator?
For all I know the alternator could be fine.
So, what'* the best way to find this whiney pulley? It'* not the supercharger. The supercharger whine in this car was never very pronounced. So, for that to start all of a sudden out of the blue doesn't make sense. I held a cabinet screw driver up to the top pulleys in the accessory belt path and they all seem to be noisey up to a screwdriver. No one seemed worse than the others.