there are 2 types of pistol grip , the 2 hole is a bolt in type which was used in some factory cars , most E bodys I havee use the snap in style with 1 hole & they just push in to lock into place , if you order a new shifter mechanism it will come with the 2 bolt mount , I have also drilled through the snap in stick & bolted in the 2 bolt stick in that mechanism as well