Hi, AMC,RAMBLER,CLASSIC,AMBASSADOR,REBEL, MARLIN OWNERS with Big Model 20 8/7/8" Differentials These Are 15/43 2.87 Ratio CROWN WHEEL an PINION Sets.,GROUP no 9.050 PART Nos's 3156025,3207522.They Fit an Suit The Following Models. 1960 Rebel Model 20 250 V8 1960/65 AMBASSADOR Model 80 327 V8 1963/65 CLASSIC Model 10 287/327 V8s 1965 MARLIN Model 50. 232 6cyl,287/327 V8s. Only The Best Will For your Rambler/AMC.Vehicles,.