D1ZZ-6501508-B This is the correct hanger for a 1971 Mercury Cougar or Ford Mustang and 1972 cars up until 6-25-1972, with power disc front brakes, and with manual transmissions. If you have a manual transmission car with worn out clutch bushings this is a great replacement part for you as it will have been removed from an automatic transmission equipped car which means the clutch bushings will be in mint, unused condition. Ford master part number D1ZZ-6501508-B for power disc front brakes.