I will caution anyone thinking about buying the stock three gage center pod accessory from Subaru to look very carefully before ordering it up. The stock gages are very small and the appearance (backlight) does not match the other gages.
I like the appearance of the Subaru three gage center pod itself but not the gages so ... I went with a modified stock pod from: http://WRXtra.com with two 52mm Omori Full Color gages. The third "hole" in the pod has been filled with an Innovate Motorsports XD-1 Air Fuel Ratio gage (see photos at bottom).
Stock Gages
Omori Gages
Below is the completed gage package, Omori Boost & Oil Pressure and Innovate Motorsports XD-1 Wide Band Air / Fuel Ratio