68-72 (Buick) Sportwagon, Skylark, Special, GS, (Chevy) Chevelle, Malibu, (Olds) Vista Cruiser, Cutlass, F-85, 442, (Pontiac)Tempest, LeMans, or GTO; 69-72 (Pontiac)Gran Prix; 70-72 (Chevy)Monte Carlo.
I believe that these are the only ones that have the proper brackets welded on for your suspension. U-joints may vary.