Rare NOS showing us what came out of the factory: https://www.ebay.com/itm/Datsun-Nissan-Valve-Cam-Cover-NEW-OLD-STOCK-WITH-TAGS-240Z-260Z-280Z-OEM-NOS/333359148743?hash=item4d9dc0eec7:g:USkAAOSwTeJdoie7     Here is a valve cover painted with high temp aluminum