I've been through a bunch of cat-backs over the years: stock size Borla(sounded great), 2.5" Magnaflow 13216 w/ MBS 2.5" tail, 2.5" Borla Pro-XS 40358 w/ MBS 2.5" tail, modded 2.5" Corsa 24415 for TJ(quality design, but not the sound I wanted then--prob better w/ a cat), and have the Banks 2.5"...