The Strange 12 bolt rear end Chevy casting was designed as a direct bolt-in for the 3rd and 4th generation GM F-body vehicles by integrating the mounts for the torque arm into the casting. The Strange 12 bolt rear end housing can also be purchased with bare tubes or leaf springs perches to accommodate other applications. The Strange 12 bolt housings can be ordered in any combination from pieces to finished, ready to bolt-in, configurations for popular applications. Strange’s extensive inventory of components allows for custom configurations that can be delivered in an expedited fashion. The expert sales technicians can assist in choosing the best components for your specific application. Every GM 12 bolt rear end is meticulously assembled and scrutinized by our experienced set-up department.