I used this on my Hawkeye 2006 STI... Had a de-resonated centre pipe and ninja 2 originally which was quiet.. Then I heard a Blitz nur-spec R on another subaru.. That was amazingly loud.
I thought I'd take a gamble with the Cobra since I heard the exhaust on their youtube videos rather than in person. Didn't regret it one bit, I personally think it sounds much better then the Blitz (it's not as annoyingly loud, but loud enough to make you smile insanely every time you blip it).
So this exhaust + de-resonated centre pipe = smiles all round.
Fitting was perfect - my Cobra has a straight exit, doesn't hit or rub my bumper and fits the exhaust mounts perfectly without touching chasis.
I picked the inward rolled baffle.. It was a work of art - i prefer this to the jap style - looks more OEM and less chavy (A).
You might need a gasket when fitting.