It looks like a 2.5GT, which is about 1 inch lower than than a stock Legacy wagon.
When I rallycross, after the event I put the car on jackstands, I pull all of the wheels off and make sure they are very clean. Any additional specs of mud will make the wheels vibrate at speed. The other thing I do with the wheels off is clean the struts / shocks really well. I like to make sure that there is no mud up in the towers or on the upper spring perches.