Hotchkis Sport Suspension 4009 for 1968-1974 Chevrolet® Nova® Sub Frame Connectors. The Hotchkis Performance sub-frame connectors for 1968-1974 GM® "X-Body" cars are designed to add rigidity to the chassis to improve vehicle performance by reducing chassis flex. Fabricated from 1.5 in. x 2.5 in. .120 wall rectangular steel these TIG-welded connectors are powder coated gloss black and include urethane front body mounts. Installation of these connectors does not require modifications or cutting of the floor boards. The rear mount is a weld in while the front mount is a bolt in with the option to weld. This is a must have finishing touch for any high performance application. Features: Powder Coated Gloss Black Finish TIG-welded Fabricated from 1.5 in. x 2.5 in. .120 wall rectangular steel. Urethane front body mount included Rear mount is weld in front mount is bolt in with option to weld. Does not require cutting or modifying the floor. Benefits: Improves vehicle handling. Improves vehicle traction. Reduced chassis flex.