^^^... what are your goals? power wise....
if you just want more power and you want that power during the whole power band...
i would suggest that you look at some staged kits. that way you save money in the long run and if you buy it from a certain shop you will have a resouce for asking questions.
http://www.pdxtuning.com/store/showc...?categoryid=11
look at this and tell us what you think would suite your needs power wise, then tell us what fits in your budget