I've seen several pics here on the BB showing engine and head castings sporting beautiful clean aluminum surfaces. Just finished rebuild of my 2 L for the 76 Spider and I'm kinda disappointed it doesn't look fresher. It's clean but not like I've seen posted here. Special cleaners used, paint ( kinda hope not )? First Alfa project in 30 yrs. and I'd like it to be as perfect as possible when I turn the key!!!