Not sure if there is any variation on Gibson g force over the year but I have seen some with pre drilled holes and others without. Have found a great deal on a 2015 Gibson but it has a g force. So o want to change it. If it doesent have holes then I would drill in some grocers, if not I imagine the holes would fit schallers. Does anyone have any experience with the 2015 g force and know what any pre drilled holes may be designed to fit? Thanks