03 WRX, the suspension is aftermarket, put on by a previous owner and I was wondering if there are any suggestions of alignment specifications. I do not know the brand or type of suspension, just that is a bit more stiff and lowered the entire car about an inch lower than stock. 

Welcome to the USMB.

 

For a slightly more "performance" oriented alignment I like -1.0 degrees of camber in the front and rear and 0 toe front and rear.  A small amount of rear toe out will give the car a little bit of a twitchy feel, but will be a little more responsive with initial turn in.