Yeah, that 6-pack scoup, sealed like StrokerScamp's, did nada for my Dart. For what it's worth. Many years ago, I was waiting in staging with the hood open, and a consistant winner walks by, and says, sealed hood eh?, walks on by. I started thinking about that, and my theory is, without the seal, the engine is getting a blend of average air. Round to round, it seemed to make the car tighter. That's what I think Bruce was getting at. Could be another WAG on my part too