Completely pointless and kind of rice, but if you need to round up for spending subiebucks...

http://www.5-starperformance.com/servlet/the-1444/Subaru-Impreza-Footwel...

I'm sure you could hack together some LEDs fairly easy to do this for quarter the cost.

Also SPT has a US Boost gauge coming out, although I think both you guys have boost gauges now..

http://www.5-starperformance.com/servlet/the-1534/SPT-Subaru-Boost-Gauge...