I picked this BBC intake up for $30 last night. Had to drive to Jacksonville, but it made for a nice night with the wife and no kids. Apparently this is a factory GM aluminum dual-plane with rectangle ports. I'm gonna plop it on my peanut-head RV motor and see how it runs. Should be fun. Anybody run one of these before? Seems like a neat intake. Its got brass water passages as apparently it was used on boats etc.