i have a ex exhaust and the diameter is around 1.75" however, i've seem people sell their 2000 si exhaust and claims that it's a 2" exhaust. is that true? if someone on here has a Si exhaust laying around in their garage... can you measure the inner diameter for me?? thanks.

 

My Si exhaust is in the backyard, I'll try and get out there tomorrow.

 

thanks. please keep me posted.

 

It's just under 2" OD