they are different sizes right? my JDM one looks larger then my friends USDM. his stock headers are smaller then mine.

will i pass smog with the JDM one?

 

as long as every vacumm line is connects i don't see any reason for it failing.......skunk2 im pass smog....that has a slightly bigger plenum.....are you sure your jdm im is bigger than the usdm.......thats odd....never knew that

well either way there both stock so it should pass

 

my frien with the USDM said it is. O... so skunk2 pass smog too.. hehe.. im looking forward to it then. thanks.