hks turbo exhaust

[97eclipseRS]

i was just lookin at hksusa's website and saw a product calld tha turbo exhaust. i was just wondering if anyone knew whether this was a 2.5" or 3" exhaust and what tha gains were for our cars. before tha flammin starts i know i am not turbo, im askin this question because i am planning on gettin tha hrc stage 3 turbo kit soon. thanks for any help.

 

[DSM-ZERO]

Any 3'' exhaust will be good for a turbo system. If you get built internals Iam thinking that you want to up the boost and I suggest a 3'' exhaust. a GS-T cat back will fit.