First check your smog laws, dont need to remove cats if your not allowed to. Click on the banner at the top of this page for a good exhaust. All mandrel bent stainless steel exhaust.
Beastie is right, better check your smog laws, or you wont be able to pass next time you go to get it checked. If you are not planning on running it on the road, a lot of companies sell bolt on exhaust systems, we tend not to mention company's that compete with Chris, We want to support this forum, that is why he referred you to Chris's store. But if it is too pricey for you right now, we understand, just understand certain company's names will not be listed here. Do a web search and you will find several that bolt on, I did and found several, I then decided after research that I would wait a little longer and get a good set and do it only 1 time. Good luck with your project.