Does anyone know if a catback exhaust for a 98-02 2dr 4cyl accord will fit a 4 dr same motor same year.. just worried about the length, not the bolt up

 

Pretty sure they are different. I think the apex'i one comes with a small 6" extension piece for the 4dr, or atleast mine did. I could not figure out why they made it like that but now that you mention it, it makes sense that they would just extend the exhaust a litttle longer for the 4dr so they don't have to make 2 separate systems.