If the Invidia N1 is too much "bang" for your taste, then the Q300 should be right up your alley.
The Q300 was created with the quite car enthusiast in mind. The owner that doesn't want to draw too much attention to themselves, but wants to add a little more sound than the stock exhaust.
Made from 304 stainless steel exhaust tubing, this exhaust will be a nice step up from the factory Subaru components. Starting from the exit of the stock overpipe, the Q300 tubing is 60mm until the 101mm (4") exhaust tips come out from under the bumper. With the nicely polished rolled lip on each exhaust tip, your "twin" will not only sound good driving down the road, but look equally the part.