1969 68 70 71 Chevelle Beaumont 12 Bolt Rear End 3:07 Possi 1969 Chevelle SS396 BB car 12 bolt rear end from Arizona it's got no pitting marks on it still have the original overspray on it from soundproofing casting #3959038NF date D 29 9 Axle tube flange to axle tube flange 55 1/4 in, Axle Splines 30, Axle code CN 0605 B The previous owner had upgraded it to a 3:07 with positraction Gear GM # 3862691 14:43 Date 10,67 I have purchases from family that the person has passed away to upgrade my car and never used it but I have owned this for 25 years very nice clean condition. Would also fit in other GM A-body cars El Camino, Malibu, Monte Carlo, Buick Skylark GS, Pontiac GTO Judge, Olds Cutlass 442 This 3:07 gear ratio is perfect for all automatic transmissions and good performance on the highway.$2600.