I have a 1999 cobra with bassani cat-back. I want to get an x-pipe but I don't know if I should get one with cats or without cats. The reason why I'm not sure about the one without cats is that it might be too loud and not sound clean. I had a 1996 cobra with flowmasters and I put a BBK x-pipe without cats. It sounded good when I would rev it but when the rpms came down it sounded nasty. So I ended up putting two cats on it to even out the noise. It sounded better after that. So let me know with what x-pipe I should go with.