06 civic muffler size?

[EK4R]

hey guys i got a mate who wants to install some muffler on his stock pipe.
just wondering the size so he knows what to get.

any good brands for the 06 civics? and price range

and if anyone has already modded a 06 let me know any details would be great.

[EK4R]

no 1 know???

[aimre]

Well if u get a muffler that got a bigger inlet, any exhaust will still be able to fit it, they just either, use a flange, or fill the gaps with metal