ive got a hotshot cai, its a little pricey, but imo was well worth it. you can go with a wai or a cai, whichever you prefer. cai's typically help with low end acceleration for better day to day driving while a wai usually helps with top end. id rather have the torque down low so i chose the cai. btw, cai=cold air intake, wai=warm air intake. go to
http://www.southwestautoworks.com/ for an idea of whats out there for you. theyre local for you and i so if you need anything, call em up, alex and kevin are good guys and will help you find what you need. tell em AsleepAltima sent you. this wont get you a discount but it will let them know that the word of mouth thing is working. as far as exhaust goes, ive got a flowmaster and i love it, some people swear they suck on imports but its a matter of opinion really.