first of all a cai wouldnt blow the seal on your exhaust

second of all you should know what exhaust are good and silent.. we have a search button and many threads about this.. well to answer your question you should be able to find some cat backs for around 300-450 bucks through the sponsors of this site. apex ws, rsr ex mag, greddy sp, etc are some of the silent ones. you could always go custom piping with a long resonator and one of the silent mufflers for a bit cheaper. but yeah shame on you for not using the search button :fawk: :thumbup: