Does anyone know the current GM part number for this black wingnut that's for sale in this ebay ad?

http://cgi.ebay.com/ebaymotors/NOS-67-68-69-70-71-72-Camaro-Chevelle-Nova-Wing-nut_W0QQitemZ270195053197QQihZ017QQcategoryZ34198Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem


Mike