It might not have the aluminum block though. Put a magnet on it to be sure. Those factory aluminum blocks weren't very good for anything. They had corrosion problems and head gaskets leaks from the beginning. They're too weak for high horsepower as the block would flex too much. They're fine for a mild street engine and as a conversation piece at a show or cruise night if you keep good coolant in it and have a top quality head gasket but otherwise, I'd rather have an iron block.