All are 10 bolt
Sorry no 12 bolts what so ever
A body GM corporate 8.5 rear ends. These came out of 71 & 72 models.
They will fit 64-72.
These are one of the strongest rear ends you can put in your car. highway gear , non posi. Parts are still available to build these. $375.00 each
78-88 GM 7.5 rear ends . Non posi , open highway gear , working rear ends. $375.00 each
Rear sway bars 78-88 $100.00 each
Thanks for looking Bryan show contact info
Malibu Pontiac GTO Lemans Grand Prix Tempest Olds 442 Cutlass F85 Hurst Chevy Chevelle Monte Carlo Buick Skylark GS