For 1968 390-2V engines without air conditioning, with dual alternator belts, and with power steering.
1968-69 390-4V, 427 GT-E, or 1968-69-70 428 Cobra Jet engines. All without air conditioning. All with dual alternator belts, and with power steering. Triple sheave 1968-69-70 crank pulley.
Ford part # C8AZ-6A312-D, Ford casting # C8AE-6312-D.