dude some good headers are HOOKER HEADERS by HOLLEY...it was proven for an 8 hp gain..i think in one of the earlier issues of super street or something had a write about it and the results were awesome...and i dont think the prices go to 400 something..if i was you..you dont have to get a whole new intake..just get a k&N filter stock replacement...and if i was you ill try and custom a pipe that runs under the air box that runs to the front end of the bumper..its cheaper that way and if you want performance thats what i'll do..its a whole lot better than getting a aem cold air intake that is like almost a 200 price range..and if you want some kool..use the whole air box thing and if your not satisfy with the intake tube just get a apc intake tube w/o the cone filter and use that because the stock has the funny lookin grooves and what you want is the most and smoothes velocity of air into the intake....but if you really want some thing even better...build or buy a surge take...this something neat that the 24 hour lemans guy are doing..im going to do it..what happens that air gets build up into the surge tank and then it shoots a shit loads of air into your intake...bam...more air equals more hp...