My girlfriends 04 v6 crossfire's cats are cracking. She needs them replaced ( or potentially not) depending on noise variation. Her exhaust is stock but I'm looking for a replacement cat, hi flow, or regular that will fit on the stock pipe size and I havent been able to find any nor do I know the exact pipe diameter of the stock exhaust. The dealership cost is ridiculous so anything other is suitable. Any suggestions or ideas? Also any sound clips of no rear clips would be awesome. Thanks for the help!!