The Corbeau Buick Regal/Grand Sport seat brackets are manufactured to be a direct bolt in to the 1968-1972 Buick Regal and Grand Sport that came from the factory with bucket seats. Direct bolt in means your bracket will bolt to the existing bolt holes in your floor board with little to no modifications. Corbeau Buick seat brackets are powder coated in a black matte finish and include Double Locking Sliders.