Autometer gauge pods are designed to add on to the factory A-pillar with 4 plastic clips. You will have to drill holes into your factory A-pillar and this gauge pod to hold it in place. They hold 52mm (2 1/16″) gauges. If you want to hold 60mm (2 5/8″) gauges, you will need to enlarge the holes. They come in both a single pod or a dual pod.