1964-1970 Ford Mustang, Fastback, Coupe, Convertible, GT, GTA, Mach 1, Boss, Shelby GT350, GT500, KR, Fairlane, Torino, Galaxie 500 XL, Mercury Cougar, XR7, GT-E, Eliminator.     289 HIPO - 390 - 427 - 428CJ/SCJ - Boss 302/429 AIR CLEANER WING NUT.  'Single Dimple'.  This is an ORIGINAL FORD PART.  Great Condition. No real rust. Not bent or cracked. Impossible To Find Original.     Please email with any questions.              021926-2             WE HAVE A STORE WITH THOUSANDS OF ORIGINAL and NOS FORD PARTS. CHECK IT OUT.