I recently purchased a dc sports SS header with a 2 inch outlet and an AEM catback exhaust (2.25 inch inlet piping) and want to get a catco high flow cat. My question is what size cat piping do i get....do i go with a 2 inch or 2.25 inch cat? Just wanna make sure i get the right cat for my coupe. Thanks.

 

get a 2.25" catco

 

that is what i was lookin into (a catco)....wasnt sure if 2.25 or a 2...since the header only outputs 2.