Year & Model Axle Length Notes 1965-1966 Mustang 57.25 inches 1967-1970 Mustang 59.25 inches 1971-1973 Mustang 61.25 inches 1977-1981 Versailles 58.50 inches 1967-1973 Mustang, Torino, Ranchero, Fairlane 59.25 inches to 61.25 inches 1957-1959 Ranchero and station wagon 57.25 inches 1966-1977 Bronco 58 inches 1977-1981 Granada/Versailles 58 inches 1967-1971 Comet, Cougar, Mustang, Fairlane 59.25 inches 1971-1973 Mustang 61.25 inches 1964 Falcon 58 inches 1967 Cougar 60 inches 1967 Fairlane 63.50 inches coil springs(ya right) 1972 Ford Van 3/4 ton 68 inches 1973-1986 Ford Van 3/4 ton 65.25 inches 1957-1959 Ranchero and station wagon 57.25 inches narrowest 9" housing 1966-1977 Bronco 58 inches 5-on-5 1/2 inch diameter bolt circle 1967-1973 Torinos, Rancheros, Fairlanes 59.25 inches or 61.25 inches 1967-1971 Comets, Cougars, Fairlanes 59.25 inches 1975 Mustang II 8" 57.00 inches 1974 Maverick 8" 56.50 inches YEAR/MODEL (flange to flange) 46" 50" 52" 54" 56" 57" 58 3/4" 60" '66-'77 BRONCO X