This gauge pod from ATI is similar to the Defi one, but has the added feature of being able to hold 52mm or 60mm gauges.
Just like the Defi pod, it snaps in place in the center dash, replacing the factory clock.
It can hold any standard-sized 52mm (2 1/16") or 60mm (2 3/8") gauge. The secret is a cool punch-out ring that's part of the bezel plastic. To mount 52mm gauges, just install them in the pod. To mount a 60mm gauge in any of the holes, just snap out the plastic ring. (Once snapped out, it cannot be replaced.) The color is a semi-gloss dark gray that matches the Subaru dash very nicely, but it can also be painted.
You can also get color inlay plates for the face of the pod. (Note that these are for 52mm gauges ONLY.) See below for pictures and pricing.
Includes English installation instructions and rubber gauge mount bands. Fits all 2002-07 Impreza/WRX/WRX STi.