i just bought a 4-2-1 exhaust manifold and i realized that it says ep3 on the heatshield on that cat and it also says it on one of the piping. it looks like someone wrote it in pen so whoever must have shipped it to cali must have writen it. but i was wondering if the jdm ep3 ctr 2-1 downpipe/cat is the same as the jdm dc5 itr?

 

It looks the same in a crude drawing on Honda's site.

 

the civic and integra use the same header downpipe and b pipe with a different rear section