66-72 GM-Interior bucket back bumpers with screws GM A-body , , , , PG, , 68-74 X-body / , 1966-72 , Bucket back bumpers 4pcSet. These are the 2 bumpers that are located under the bucket seats backs, they are the bump stops and are always cracked, mushed or missing. These come with the screws. Now you can replace them. These are exact to the factory originals black color with the metal plate. There is enough for one front bucket seats. Applications 66-72 A-body , , , , GP, , 66-74 X-body / / / 66-72 full size, 66-72