Swap Meet Parts You Passed On and Later Regretted Not Buying

About 15 or 20 years ago I was at a general auto swap meet. There was very little Mopar stuff. One Guy had mostly all Mopar stuff, and he had a name brand small Mopar dual 4 intake block manifold. It was a regular inline dual 4 intake. He wanted $150 for it. At the time, I still had a rather high house payment and a kid in college, so I passed on it. I regretted it almost immediately, and I REALLY regret it now. I don't think I have ever seen a SBM with a dual 4 setup at a car show.