For sale is an original Chevy 12 bolt passenger car 3 series "140" posi carrier that was modified with the vintage 70's aftermarket spider gear replacement inserts that locked the axles solid. The side gears and clutches are still intact yet the springs, preload plates and the 2 spider gears are missing. If you have a damaged posi carrier with these good components this would be an swap. Yours for $250 as pictured with the cross pin and bolt.