I messed around with it more today. I did a little more sanding on the crank pulley, but not much since it was hard to reach and not really any fun. So I said fagetaboutit. I tensioned it as tight as I could, and decided to take it for a drive. Not really any noise below 3kRPM. Just a slight squeal above that when the outboards kick in. It is hard to hear because the engine and exhaust noise pick up and I really have to pay attention to the horizon because it comes up real fast!!! Maybe the sanding, the alignment of the pulley, a couple different belts, and a lot of tension is all it took (20 times!) to quiet it down. Now I won't be too embarrassed to drive it where people can hear me.
I stopped at a friends auto shop tonight. His business partner came to to check out the car. Said it looks like I just bought it out of a magazine! That was nice.
Tomorrow I may attempt a long haul (100 miles one way) to a mopar show. Hope I can make it there and back no problems. Wish me luck.