Especially on an N/A I don't think the exhaust will gain you any performance, only sound.

The Borla and clones have an extra resonator to make the exhaust sound deeper without being really loud.

I don't know what the difference is, but I'd recommend an OBX instead. It's basically a knock-off of the Borla, and it sounds and works great at 1/2 the cost.

I know that Rob and others have worked on headers for the N/A but I don't think there's an off-the-shelf option yet.