Omori 45mm white needle/red backlight electrical boost gauge with the 45mm steering column pod. The pod is made of tough ABS plastic. It comes in two sections for easy installation. The sections fit together tightly with some pressure. Installation is secured with the included bolts, friction washer and nuts. Drilling of the steering column cover is required but fairly easy for the WRX, STi and Forester. The installation instructions for the gauge pod is here: