1998 GT Catback on an 03
 

i can get a catback barely used 98 gt catback for a great price. my question is will i need to modify it in any way so that it fits my 03? i know that the tip hangers are the same but what about the other hangers?

they are all different, so you'll have to mod the entire system...save yourself the pain and just get the right one for your year.....