[phatlt23]

Which sound better and which would provide the most gain?

 

[Chick]

Never heard of a Cosworth GT Spec.

 

[BigRed03]

well.....cosworth typically only goes on duratec, atleast for the focus thats all ive seen cosworth parts for, but borla, magnaflow, focussport stealth are all pretty decent and provide somewhere around the same gains.

 

[phatlt23]

focus sport sells them. almost $700 just wanting to know how good they were. and how well they sound

 

[hEaT]

For the price difference, I don't think the extra $300 to $400 is going to get you an exhaust sounding twice as good.